Science Bowl Past Paper PDF

Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: The ice sheet that covered northeastern United States came from which of the following locations? w) Labrador center in eastern Canada x) Keewatin center in central Can...

Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: The ice sheet that covered northeastern United States came from which of the following locations? w) Labrador center in eastern Canada x) Keewatin center in central Canada y) Cordilleran center in the Rocky Mountains z) Greenland ANSWER: W -- LABRADOR CENTER IN EASTERN CANADA ERSC-91; Multiple Choice: A volcano which is composed of lava flows and pyroclastic material and which is steep-sided and very tall is known as: w) Syncline x) Composite cone y) Anticline z) none of these ANSWER: X -- COMPOSITE CONE ERSC-91; Multiple Choice: The solidified lava of a volcano belongs to which rock family? Is it: w) igneous x) metamorphic y) sedimentary z) fossilized ANSWER: W -- IGNEOUS ERSC-91; Multiple Choice: In geological studies, a dome shaped intrusion is called a: w) volcanic neck x) laccolith y) nuee ardente z) caldera ANSWER: X -- LACCOLITH ERSC-91; Multiple Choice: Shiprock in New Mexico is a: w) laccolith x) volcanic neck y) cinder cone z) caldera ANSWER: X -- VOLCANIC NECK Earth Science - 1 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: Iceland has a great deal of volcanic activity. The reason for this is: w) it was formed above a mid-ocean rift. x) it is part of the "Ring of Fire". y) two tectonic plates are rubbing against each other under Iceland. z) the American plate is diving under the European plate in this region. ANSWER: W -- IT WAS FORMED ABOVE A MID-OCEAN RIFT. ERSC-91; Multiple Choice: Of the following, the rock that is most resistant to both chemical and mechanical weathering is: w) shale x) limestone y) marble z) quartzite ANSWER: Z -- QUARTZITE ERSC-91; Short Answer: There is a specific term used by geologists to describ rock weathering in which shells or plates are broken away from a rock leaving it rounded in appearance. What is this term? ANSWER: EXFOLIATION ERSC-91; Short Answer: Biosphere describes the earth realm where life occurs What describes the entire solid earth realm and is composed of mineral matter? ANSWER: LITHOSPHERE ERSC-91; Multiple Choice: Which of the following energy sources does NOT originally come from the Sun? w) wind x) Ocean thermal energy conversion y) geothermal z) hydroelectric ANSWER: Y -- GEOTHERMAL Earth Science - 2 Science Bowl EARTH SCIENCE ERSC-91; Short Answer: What is the name of the atmosphere layer of upwardly diminishing temperature situated above the stratosphere and topped by the mesopause? ANSWER: MESOSPHERE ERSC-91; Short Answer: What is the term used to measure the intensity of solar radiation and is equal to one gram calorie per square centimeter per minute? ANSWER: LANGLEY ERSC-91; Multiple Choice: What percentage of the earth's atmosphere does O2 comprise? w) 75% x) 50% y) 21% z) 32% ANSWER: Y -- 21% ERSC-91; Short Answer: What gas makes up the majority of our atmosphere? ANSWER: NITROGEN ERSC-91; Multiple Choice: The tanning rays of the sun are called: w) infrared rays x) visible light y) ultraviolet rays z) gamma rays ANSWER: Y -- ULTRAVIOLET RAYS ERSC-91; Multiple Choice: What is the relative humidity when the absolute humidity is 3 grams per cubic meter and the air has a capacity of 12 grams per cubic meter? w) 4% x) 9% y) 25% z) 400% ANSWER: Y -- 25% Earth Science - 3 Science Bowl EARTH SCIENCE ERSC-91: Multiple Choice: While many different gases are found in the atmosphere, a number do NOT contribute significantly to solar heating of the atmosphere. Which TWO of the following gases do NOT absorb much heat? w) carbon dioxide x) nitrogen y) water vapor z) oxygen ANSWER: X and Z -- NITROGEN and OXYGEN ERSC-91; Multiple Choice: Global climate change is being attributed to the atmospheric increase in what two gases produced by human activities? w) oxygen and hydrogen x) ozone and methane y) nitrous oxide and sulfur dioxide z) methane and carbon dioxide e) ozone and carbon monoxide ANSWER: Z -- METHANE AND CARBON DIOXIDE ERSC-91; Short Answer: To within 5%, how much has atmospheric CO2 concentration INCREASED since the year 1800? ANSWER: 25% ERSC-91; Multiple Choice: The concentration of carbon dioxide in the atmosphere is in the range of: w) 1-10 parts per million x) 10-100 parts per million y) 100-1000 parts per million z) 1000-10,000 parts per million ANSWER: Y -- 100-1000 PARTS PER MILLION (the exact number is 350 ppm as of the time of this article) ERSC-91; Short Answer: The ozone layer is located in which region of the atmosphere? ANSWER: STRATOSPHERE Earth Science - 4 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: In geological studies, all of the following are TRUE of P waves except that they: w) are body waves x) travel like sound waves y) can pass through liquids z) are slower than S waves ANSWER: Z -- ARE SLOWER THAN S WAVES ERSC-91; Multiple Choice: Which of the following terms is used to describe the appearance of a mineral in transmitted light? Is it: w) diaphaneity (pron: die-ah-fah-na-ah-tee) x) translucence y) opaqueness z) porosity ANSWER: W -- DIAPHANEITY ERSC-91; Multiple Choice: In geological studies, arkose contains which of th following minerals which gives it a reddish color? w) orthoclase x) calcite y) aragonite (pron: a-rag-o-nite) z) quartz ANSWER: W -- ORTHOCLASE ERSC-91; Multiple Choice: Which one of the following minerals does NOT contain silica tetrahedrons? w) quartz x) muscovite y) halite z) orthoclase ANSWER: Y -- HALITE Earth Science - 5 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: Which of the following minerals is noted for its one perfect cleavage? w) calcite x) muscovite y) quartz z) pyrite ANSWER: X -- MUSCOVITE ERSC-91; Multiple Choice: Which of the following gases is given off in the acid test of a carbonate mineral? w) chlorine x) nitrogen y) carbon dioxide z) sulfur dioxide ANSWER: Y -- CARBON DIOXIDE ERSC-91; Multiple Choice: Fine parallel lines, or striations, are most likel to be seen on a cleavage surface of which of the following minerals? w) quartz x) orthoclase y) hornblende z) plagioclase (pron: play-gee-o-klase) ANSWER: Z -- PLAGIOCLASE ERSC-91; Multiple Choice: Which of the following minerals is NOT a silicate? w) orthoclase x) muscovite y) augite (pron: aw-jIt) z) magnetite ANSWER: Z -- MAGNETITE Earth Science - 6 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: Which of the following pairs contains one igneous and one sedimentary rock? w) shale and marble x) sandstone and quartzite y) granite and limestone z) obsidian and gneiss ANSWER: Y -- GRANITE AND LIMESTONE ERSC-91; Multiple Choice: Which of these pairs of minerals are always found in granites? w) muscovite and calcite x) quartz and orthoclase y) hornblende and talc z) augite and magnetite ANSWER: X -- QUARTZ AND ORTHOCLASE ERSC-91; Multiple Choice: An example of a rock whose minerals have been crushed into thin sheets or bands is: w) shale x) schist y) conglomerate z) granite ANSWER: X -- SCHIST ERSC-91; Multiple Choice: The hydrolysis of orthoclase results in the formation of: w) shale x) kaolin y) lime z) hydrochloric acid ANSWER: X -- KAOLIN Earth Science - 7 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: The deposits of loess in the United States probabl originated as which of the following? w) talus x) rock flour y) humus z) geyserite ANSWER: X -- ROCK FLOUR ERSC-91; Multiple Choice: This sedimentary rock was used to build the Pantheon and the Colossium: w) marble x) travertine y) sandstone z) ironstone ANSWER: X -- TRAVERTINE ERSC-91; Short Answer: What is another name for the semi-precious stone heliotrope? ANSWER: BLOODSTONE ERSC-91; Short Answer: Rocks are classified depending upon how they are formed. In which class would slate be found? ANSWER: METAMORPHIC ERSC-91; Multiple Choice: Which of the following is an igneous rock? w) Granite x) Shale y) Coal z) Slate ANSWER: W -- GRANITE Earth Science - 8 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: Which of the following is a metamorphic rock? w) sandstone x) granite y) quartz z) marble ANSWER: Z -- MARBLE ERSC-91; Multiple Choice: The black sand of the Hawaiian Islands is composed of which of the following? w) dark limestone x) quartz y) gypsum z) basalt ANSWER: Z -- BASALT ERSC-91; Short Answer: Name the clay mineral produced by the alteration of potash feldspar which is also used in ceramics. ANSWER: KAOLINITE ERSC-91; Multiple Choice: All of the following are examples of chemically precipitated sedimentary rock except: w) limestone x) sandstone y) dolomite ANSWER: X -- SANDSTONE ERSC-91; Short Answer: Name the extremely fine-grained, wind-blown clay particularly characteristic of the arid and semi-arid southwestern United States, Mexico and South America. This material was used by the southwestern Indians and Mexicans for constructing huts and buildings from prehistoric times. ANSWER: ADOBE Earth Science - 9 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: Which of the following materials is the hardest? w) calcite x) silicon carbide y) topaz z) quartz ANSWER: X -- SILICON CARBIDE ERSC-91; Multiple Choice: Igneous rocks that form from magma are known as: w) minerals x) granite y) intrusive rocks z) gneiss (pron: nice) ANSWER: Y -- INTRUSIVE ROCKS ERSC-91; Multiple Choice: The mineral halite is: w) potassium chloride x) sodium chloride y) calcium chloride z) calcium bromide ANSWER: X -- SODIUM CHLORIDE ERSC-91; Multiple Choice: What is the name of the white clay which has been used for thousands of years in the fabrication of ceramic bodies? Is it: w) Talc x) Kaolin y) Feldspar z) Quartz ANSWER: X -- KAOLIN ERSC-91; Multiple Choice: An agate is a form of what mineral? w) magnetite x) feldspar y) quartz z) copper ANSWER: Y -- QUARTZ Earth Science - 10 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: Which of the following is the name of the partly melted rock layer on which the plates move? w) lithosphere x) asthenosphere y) hydrosphere z) outer core ANSWER: X -- ASTHENOSPHERE ERSC-91; Multiple Choice: Which of the following areas is closest to the total surface area of the earth in square kilometers? w) 500 million x) 500 billion y) 500 thousand z) 5 billion ANSWER: W -- 500 MILLION ERSC-91; Multiple Choice: We know that the OUTER core is liquid because: w) P waves pass through it x) S waves pass through it y) P waves cannot pass through it z) S waves cannot pass through it ANSWER: Z -- S WAVES CANNOT PASS THROUGH IT ERSC-91; Short Answer: It is 9:00 p.m. in Greenwich, England. You are on a ship whose local time is 6:00 p.m. What is the longitude of your ship? ANSWER: 45 DEGREES WEST ERSC-91; Multiple Choice: Field capacity represents the maximum quantity of water held: w) in the soil against the force of gravity x) in the ground water zone y) in the intermediate zone z) below the water table ANSWER: W -- IN THE SOIL AGAINST THE FORCE OF GRAVITY Earth Science - 11 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: Trade winds are persistent easterly winds develope between: w) subtropical high pressure and equatorial doldrum x) subtropical high pressure and subpolar low pressure y) westerlies and polar highs z) none of the above ANSWER: W -- SUBTROPICAL HIGH PRESSURE AND EQUATORIAL DOLDRUM ERSC-91; Multiple Choice: An open-ocean community is also called a: w) pelagic community (pron: pe-laj-ick) x) benthic community (pron: ben-thik) y) lentic community (pron: len-tick) z) lotic community (pron: lot-ick) ANSWER: W -- PELAGIC COMMUNITY ERSC-91; Multiple Choice: A lake or pond community is also known as a: w) pelagic community (pron: pe-laj-ick) x) benthic community (pron: ben-thick) y) lentic community (pron: len-tick) z) lotic community (pron: lot-ick) ANSWER: Y -- LENTIC COMMUNITY ERSC-91; Short Answer: What is the name given to a region where one plate of the earth's crust is sliding under another? ANSWER: SUBDUCTION ZONE ERSC-91; Multiple Choice: The tectonic plates on which India and the adjacen portion of Asia ride are colliding at a rate of: w) 1-10 millimeters per year x) 1-10 centimeters per year y) 1-10 meters per year z) 1-10 decimeters per year ANSWER: X -- 1-10 CENTIMETERS PER YEAR Earth Science - 12 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: In which of these states can large numbers of drumlins be found? w) Oregon x) California y) Texas z) Wisconsin ANSWER: Z -- WISCONSIN ERSC-91; Multiple Choice: Which one of these glacial features is believed to have formed in the bed of a subglacial stream? w) an esker x) a kame y) a drumlin z) a moraine ANSWER: W -- AN ESKER ERSC-91; Multiple Choice: In which of the following is a continental glacier found? w) Switzerland x) the Rockies y) Greenland z) the Andes Mountains ANSWER: Y -- GREENLAND ERSC-91; Multiple Choice: Deposits that form when the ice in a glacier melts are called: w) drifts x) dunes y) veins z) cirques (pron: serks) ANSWER: W -- DRIFTS Earth Science - 13 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: The earth's climate has been warming since the las glacial period which ended about how many years ago? w) 1,000 to 2,000 years ago x) 10,000 to 20,000 years ago y) 100,000 to 200,000 years ago z) 1,000,000 to 2,000,000 years ago ANSWER: X -- 10,000 TO 20,000 YEARS AGO ERSC-91; Multiple Choice: Cirrus clouds are: w) rain clouds x) thick and fleecy y) made of ice crystals z) low cloud layers ANSWER: Y -- MADE OF ICE CRYSTALS ERSC-91; Multiple Choice: The name of a rapid rise of coastal water that accompanies the arrival of a cyclone is called: w) hurricane x) storm surge y) tidal wave z) cyclonistat ANSWER: X -- STORM SURGE ERSC-91; Multiple Choice: Certain substances are classified as water pollutants, others as air pollutants and still others as land pollutants. Which of the following pollutes all three parts of our environment? w) fluorocarbons x) smog y) acid rain z) ozone ANSWER: Y -- ACID RAIN Earth Science - 14 Science Bowl EARTH SCIENCE ERSC-91; Short Answer: What is the name of the phenomenon that causes an accumulation of heat in the lower atmosphere because of the absorption of longwave radiation from the Earth's surface? ANSWER: GREENHOUSE EFFECT ERSC-91; Multiple Choice: Which is true for Low-Latitude Climates? w) have a winter season x) lack a winter season y) are wet throughout the year z) are dry throughout the year ANSWER: X -- LACK A WINTER SEASON ERSC-91; Multiple Choice: The Greenhouse Effect is caused primarily by which of the following processes? w) blocking incoming short wave solar energy x) absorbing incoming short wave solar energy y) heating of the Earth's stratosphere z) absorbing outgoing long wave radiation from the Earth ANSWER: Z -- ABSORBING OUTGOING LONG WAVE RADIATION FROM THE EARTH ERSC-91; Multiple Choice: Fluorite is what number on Moh's hardness scale? w) 1 x) 2 y) 3 z) 4 ANSWER: Z -- 4 ERSC-91; Multiple Choice: Apatite is what number on Moh's (pron: moes: rhyme with toes) hardness scale? w) 1 x) 3 y) 5 z) 7 ANSWER: Y -- 5 Earth Science - 15 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: Hematite is a primary ore of which of the followin metals? w) zinc x) tungsten y) iron z) none of the above ANSWER: Y -- IRON ERSC-91; Multiple Choice: Galena is a primary ore of which of the following metals? w) zinc x) tungsten y) lead z) silver ANSWER: Y -- LEAD ERSC-91; Multiple Choice: Sphalerite is a primary ore of which of the following metals? w) zinc x) tin y) copper z) iron ANSWER: W -- ZINC ERSC-91; Multiple Choice: Which of the following minerals is a source of copper? w) Bauxite (pron: box-ite) x) Hematite y) Malachite z) Galena ANSWER: Y -- MALACHITE ERSC-91; Multiple Choice: Which physical phenomenon or principle is most often applied in the search for petroleum reservoirs? w) gravitational attraction x) magnetic field distortions y) natural radioactive decay of minerals z) acoustic wave transmission and reflection ANSWER: Z -- ACOUSTIC WAVE TRANSMISSION AND REFLECTION Earth Science - 16 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: Which of the following time periods describes the age of the coal deposits of the Eastern United States? w) Jurassic and Cambrian x) Mississippian and Pennsylvanian y) Pliocene and Miocene z) none of these ANSWER: X -- MISSISSIPPIAN AND PENNSYLVANIAN ERSC-91; Multiple Choice: Of the following four geologic periods, which is the oldest? w) Devonian x) Silurian y) Permian z) Jurassic ANSWER: X -- SILURIAN ERSC-91; Multiple Choice: Of the following four geologic periods, which is the most recent? w) Devonian x) Silurian y) Permian z) Jurassic ANSWER: Z -- JURASSIC ERSC-91; Multiple Choice: On the Phanerozoic (pron: fan-eh-reh-zO-ik) Time Scale, which of the following geologic periods occurred approximately 225 to 280 million years ago? Is it: w) Jurassic x) Permian y) Carboniferous z) Silurian ANSWER: X -- PERMIAN Earth Science - 17 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: On the Phanerozoic (pron: fan-eh-row-zo-ick) Time Scale, which of the following geologic periods occurred approximately 395 to 430 million years ago? Is it: w) Jurassic (pron: ju-ras-ick) x) Permian y) Carboniferous z) Silurian ANSWER: Z -- SILURIAN ERSC-91; Multiple Choice: On the Phanerozoic (pron: fan-eh-reh-zO-ik) time scale, which of the following geologic periods occurred approximately 500 to 570 million years ago? Is it: w) Cambrian x) Ordovician (pron: ord-eh-vish-en) y) Carboniferous z) Silurian ANSWER: W -- CAMBRIAN ERSC-91; Multiple Choice: The Miocene, Eocene and Paleocene epoches belong t what geologic period on the Phanerozoic Time Scale? Is it the: w) Devonian x) Permian y) Triassic (pron: try-as-ick) z) Tertiary ANSWER: Z -- TERTIARY ERSC-91; Multiple Choice: During which period, in the earth's history, did MOST dinosaurs become extinct? w) Carboniferous x) Cretaceous y) Quaternary z) Triassic ANSWER: X -- CRETACEOUS Earth Science - 18 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: The disappearance of the dinosaurs also marks the end of which geological era? w) Precambrian x) Cambrian y) Mesozoic (pron: mez-ah-zo-ik) z) Cenozoic (pron: see-nah-zo-ik) ANSWER: Y -- MESOZOIC ERSC-91; Multiple Choice: On a topographic map, lines that indicate water depth are termed: w) isogonic lines (pron: eye-seh-gone-ik) x) bathymetric lines (pron: bath-i-meh-trik) y) isopachs z) none of these ANSWER: X -- BATHYMETRIC LINES ERSC-91; Multiple Choice: In geological studies, a fault in the earth's surface in which the hanging wall has moved UP relative to the footwall is termed: w) overthrust fault x) reverse fault y) tear fault z) none of these ANSWER: X -- REVERSE FAULT ERSC-91; Multiple Choice: In geological studies, a fault in the earth's surface along which primarily horizontal movement has taken place is termed: w) overthrust fault x) strike-slip fault y) reverse fault z) none of the above ANSWER: X -- STRIKE-SLIP FAULT Earth Science - 19 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: In studies of the surface of the earth, a reverse fault having a dip between 10 and 45 degrees is known as a: w) thrust fault x) normal fault y) strike-slip fault z) neither of these ANSWER: W -- THRUST FAULT ERSC-91; Short Answer: What is the name given to a flat-topped plateau bordered on all sides by cliffs? ANSWER: MESA or BUTTE ERSC-91; Multiple Choice: You are adrift off the coast of Miami, Florida in the Gulf Stream. Where would you most likely land? w) Argentina x) Louisiana y) New York z) The British Isles ANSWER: Z -- THE BRITISH ISLES ERSC-91; Short Answer: A troughlike downfold of strata is called a: ANSWER: SYNCLINE ERSC-91; Multiple Choice: The horse latitude which occurs at approximately 30o - 35o north is also known as the: w) doldrums x) calms of Cancer y) calms of Capricorn z) trough of the Pacific ANSWER: X -- CALMS OF CANCER Earth Science - 20 Science Bowl EARTH SCIENCE ERSC-91; Short Answer: Of the three types of corals, Scleractinian, Rugose and Tabulate, which one is still in existence today? ANSWER: SCLERACTINIAN ERSC-91; Multiple Choice: A circular cavity ground out of bedrock by running water is called a: w) cave x) pothole y) sinkhole z) kettle hole ANSWER: X -- POTHOLE ERSC-91; Multiple Choice: A yazoo stream flows through which of the following? w) gorge x) divide y) backswamp z) water gap ANSWER: Y -- BACKSWAMP ERSC-91; Multiple Choice: Which of the following is a famous hanging trough waterfall? w) Yellowstone Falls x) Yosemite Falls y) Niagara Falls z) Victoria Falls ANSWER: X -- YOSEMITE FALLS ERSC-91; Multiple Choice: A wave with a wavelength of 40 meters and a height of 2 meters will NOT be refracted in water with a depth of more than: w) 1 meter x) 2 meters y) 10 meters z) 20 meters ANSWER: Z -- 20 METERS Earth Science - 21 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: The lag time between precipitation period and peak discharge period of a river: w) is increased by urbanization x) is decreased by urbanization y) is shorter for a large drainage basin than for a small one z) depends upon the hydraulic heads ANSWER: X -- IS DECREASED BY URBANIZATION ERSC-91; Short Answer: Give the general term used to designate the sand, silt, and mud deposited by a stream, along its bank or upon its flooplain, during periods of high water. ANSWER: ALLUVIUM or ALLUVIAL ERSC-91; Short Answer: What term is applied to dry stream channels with nearly vertical walls and flat bottoms which are characteristic of semi-arid regions. They may suddenly become filled with torrential waters after heavy rains. The term has a Spanish origin. ANSWER: ARROYO ERSC-91; Multiple Choice: What percentage of the earth's water is fresh water? w) 50% x) 22% y) 7% z) 3% ANSWER: Z -- 3% ERSC-91; Multiple Choice: The deep, least productive part of a lake is calle the: w) littoral zone x) profundal zone y) photic zone z) limnetic zone ANSWER: X -- PROFUNDAL ZONE Earth Science - 22 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: Which of the following does NOT affect sea level change? w) Antarctic ice sheet x) small glaciers and ice caps y) Arctic sea ice z) Greenland ice sheet ANSWER: Y -- ARCTIC SEA ICE ERSC-91; Multiple Choice: If all the Earth's ice melted, the increase in sea level would be approximately: w) 100 meters x) 2 meters y) 70 meters z) 20 meters ANSWER: Y -- 70 METERS ERSC-91; Multiple Choice: The curved body of water formed when a meandering river reshapes and cuts off one of its bends is called: w) an Essing pond x) an Oxbow lake y) a Swensen pool z) a Groovy pool ANSWER: X -- AN OXBOW LAKE ERSC-91; Multiple Choice: The chemical union of iron, oxygen and water forms w) magnetite x) hematite y) limonite z) pyrite ANSWER: Y -- LIMONITE Earth Science - 23 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: Give the term that describes different crystalline modifications of the same chemical substance. Is it: w) polymorphism x) isomorphism y) tetrahedral z) perovskite ANSWER: W -- POLYMORPHISM ERSC-91; Multiple Choice: Of the energy used in the United States, about wha percent is provided by hydroelectric power? w) 4% x) 20% y) 50% z) 75% ANSWER: W -- 4% ERSC-91; Multiple Choice: The B-horizon of a pedalfer soil is noted for its accumulation of: w) carbonate x) nitrogen y) humus z) oxides ANSWER: Z -- OXIDES ERSC-91; Multiple Choice: Pedocal (pron: ped-eh-kal) soils are usually found to have developed in: w) forests x) swamps y) grasslands z) jungles ANSWER: Y -- GRASSLANDS Earth Science - 24 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: High quality crop soil requires humus as a major component. Which of the following best describes the composition of humus w) fine sand particles x) decaying organic matter y) mineral like clay matter z) chemical fertilizers ANSWER: X -- DECAYING ORGANIC MATTER ERSC-91; Multiple Choice: The aquifer of a famous artesian formation in the Great Plains is a layer of rock called the: w) Clinton limestone x) Dakota sandstone y) Pierre shale z) Vermont marble ANSWER: X -- DAKOTA SANDSTONE ERSC-91; Multiple Choice: The principal aquifer of the artesian wells of Florida is a: w) porous sandstone x) fissured limestone y) series of clay beds z) mass of pumice ANSWER: X -- FISSURED LIMESTONE ERSC-91; Multiple Choice: The saltation of sand grains refers to the sand grains: w) being coated with salt x) moving in jumps and bounces y) moving in a steady stream z) being cemented together ANSWER: X -- MOVING IN JUMPS AND BOUNCES Earth Science - 25 Science Bowl EARTH SCIENCE ERSC-91; Multiple Choice: The surface of a "desert pavement" is composed mainly of which of the following? w) loose sand x) sand and clay y) pebbles and boulders z) concrete and cement ANSWER: Y -- PEBBLES AND BOULDERS ERSC-91; Multiple Choice: Which of the following are barchans? w) deflation basins x) oases y) crescent-shaped dunes z) sand storms ANSWER: Y -- CRESCENT-SHAPED DUNES ERSC-91; Multiple Choice: Which of the following does NOT form as a result o a low level temperature inversion? w) smog x) sleet y) tornado z) fog ANSWER: Y -- TORNADO ERSC-92; Multiple Choice: A type of lava characterized by a blocky appearanc is termed: w) Pillow Lava x) Aa y) Vessicular z) none of these ANSWER: X -- Aa Earth Science - 26 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: A type of volcano composed of mainly pyroclastics is termed: w) cinder cone x) shield cone y) composite cone z) none of these ANSWER: W -- CINDER CONE ERSC-92; Short Answer: Lassen Peak is an active volcano in the United States In what state is Lassen Peak located? ANSWER: CALIFORNIA ERSC-92; Multiple Choice: An example of a typical shield volcano is: w) Washington's Mount Rainier x) Hawaii's Mauna Loa y) Ecuador's Mount Cotopaxi z) Japan's Mount Fuji ANSWER: X -- HAWAII'S MAUNA LOA ERSC-92; Multiple Choice: Molten rock beneath the Earth's crust is called: w) magma x) liquicite y) lava z) igneous ANSWER: W -- MAGMA ERSC-92; Short Answer: What is the name and locality of the highest mountain peak in North America? ANSWER: MOUNT McKINLEY, ALASKA, U.S.A. Earth Science - 27 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: The jet-stream lies between which two layers of th earth's atmosphere? w) thermosphere and ionosphere x) mesosphere and thermosphere y) troposphere and stratosphere z) stratosphere and mesosphere ANSWER: Y -- TROPOSPHERE AND STRATOSPHERE ERSC-92; Multiple Choice: The degree of aridness of a geographic region is generally defined as the ratio of precipitation to: w) condensation x) evaporation y) transpiration z) snowpack depth ANSWER: X -- EVAPORATION ERSC-92; Multiple Choice: In the nebular hypothesis, each planet is formed from which of the following? w) a comet x) a number of moons y) a passing star z) a ring of gas ANSWER: Z -- A RING OF GAS ERSC-92; Short Answer: What is a selenologist (pron: sel-e-nol-o-jist)? ANSWER: LUNAR GEOLOGIST ERSC-92; Multiple Choice: There are three commonly detectable points of zero polarization of diffuse sky radiation, neutral points, lying along the vertical circle through the sun. Which of the following is NOT one of these points? Is it the: w) Arago Point x) Babinet Point y) Brewster Point z) Longfellow Point ANSWER: Z -- LONGFELLOW POINT Earth Science - 28 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: An igneous rock which is commonly black, has a glassy texture, and has a conchoidal (pron: kong-koid-al) fracture is whic of the following? w) pelite (pron: pel-ite) x) calcite y) obsidian z) none of the above ANSWER: Y -- OBSIDIAN ERSC-92; Multiple Choice: In geological studies, a breccia contains particle that have which of the following shapes? w) rounded x) angular y) square z) spheroidal ANSWER: X -- ANGULAR ERSC-92; Multiple Choice: Which of the following is the most important chemically-active fluid involved in the formation of rocks? w) hydrochloric acid x) sulfuric acid y) water z) methane ANSWER: Y -- WATER ERSC-92; Short Answer: Most natural minerals can be found in what two crysta systems? ANSWER: ORTHORHOMBIC AND MONOCLINIC ERSC-92; Multiple Choice: Diamond and graphite are polymorphs of which of th following elements? w) magnesium x) carbon y) sulfur z) nitrogen ANSWER: X -- CARBON Earth Science - 29 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: The streak of a mineral can be obtained most easil by performing which of the following tests? w) rubbing the mineral on an unglazed white tile x) putting the mineral into acid y) scratching the mineral with a diamond z) examining the mineral under a microscope ANSWER: W -- RUBBING THE MINERAL ON AN UNGLAZED WHITE TILE ERSC-92; Multiple Choice: Which of the following pairs of minerals are difficult to tell apart because both are always dark in color and almost equally hard? w) muscovite and orthoclase x) muscovite and quartz y) hornblende and talc z) hornblende and augite ANSWER: Z -- HORNBLENDE AND AUGITE ERSC-92; Multiple Choice: A specialized form of concordant igneous intrusion that is characterized by a dome in the country rock and a nearly planar floor is called a: w) lopolith x) laccolith y) batholith z) stock ANSWER: X -- LACCOLITH ERSC-92; Multiple Choice: The most common mineral found in igneous rock is: w) feldspar x) olivine y) muscovite z) fluorite ANSWER: W -- FELDSPAR Earth Science - 30 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: The metamorphic rock which forms from pure limestone is: w) slate x) gneiss y) schist z) marble ANSWER: Z -- MARBLE ERSC-92; Multiple Choice: Which coal is considered a metamorphic rock? w) anthracite coal x) bituminous coal y) lignite coal z) all of these ANSWER: W -- ANTHRACITE ERSC-92; Short Answer: What is the name for a sloping pile of rocks at the foot of a cliff? ANSWER: TALUS SLOPE ERSC-92; Multiple Choice: The earth's average density is: w) 2.82 grams per cubic centimeter x) 4.75 grams per cubic centimeter y) 5.52 grams per cubic centimeter z) 10.5 grams per cubic centimeter ANSWER: Y -- 5.52 GRAMS PER CUBIC CENTIMETER ERSC-92; Multiple Choice: The continental shelves comprise what percentage o the Earth's total land area? w) 38 percent x) 28 percent y) 18 percent z) 8 percent ANSWER: Y -- 18 PERCENT Earth Science - 31 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: Continental shelves range in width from: w) 1,500 to 5,000 kilometers x) 1,500 to 3,000 kilometers y) 0 to 5,000 kilometers z) 0 to 1,500 kilometers ANSWER: Z -- 0 TO 1,500 KILOMETERS ERSC-92; Multiple Choice: The transport of energy or matter across the parallels of latitude in a north-south direction or the reverse is called: w) global transport x) air transport y) meridional transport z) polar transport ANSWER: Y -- MERIDIONAL TRANSPORT ERSC-92; Multiple Choice: Orthoclase is what number on Moh's hardness scale? w) 4 x) 5 y) 6 z) 7 ANSWER: Y -- 6 ERSC-92; Short Answer: Diamond is what number on the Moh's hardness scale? ANSWER: 10 ERSC-92; Multiple Choice: Which of the following is the chemical formula for calcite? w) CaCO3 x) CaMgSO4 y) FeCO3 z) FeS2 ANSWER: W -- CaCO3 Earth Science - 32 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: The nickname, "Fool's Gold," refers to which of th following? w) calcite x) apatite y) fluorite z) pyrite ANSWER: Z -- PYRITE ERSC-92; Short Answer: The oxide of what lightweight metal forms corundum, rubies, and sapphires? ANSWER: ALUMINUM ERSC-92; Multiple Choice: Which of the following is the only element which i "mined" from the sea? Is it: w) copper x) magnesium y) uranium z) zinc ANSWER: X -- MAGNESIUM ERSC-92; Multiple Choice: Which physical phenomenon or principle is most often applied in the search for petroleum reservoirs? w) magnetic field distortions x) electromagnetic radiation y) natural radioactive decay of minerals z) acoustic wave transmission and reflection ANSWER: Z -- ACOUSTIC WAVE TRANSMISSION AND REFLECTION ERSC-92; Multiple Choice: Which of the following names is given to the supercontinent thought to have existed in the Cambrian period? Is it: w) Pangaea x) Afrasia y) Gondwanaland z) Europia ANSWER: W -- PANGAEA Earth Science - 33 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: Which of the following is the oldest period of tim lasting from the beginnings of the earth to approximately 570 million year ago? w) Precambrian x) Pleistocene (pron: ply-sto-sin) y) Miocene (pron: my-o-sin) z) Jurassic ANSWER: W -- PRECAMBRIAN ERSC-92; Multiple Choice: Which of the following time periods includes part of the geologic range of dinosaurs? w) Mississippian x) Devonian y) Jurassic z) none of the above ANSWER: Y -- JURASSIC ERSC-92; Short Answer: This period in earth history is the earliest subdivision of the Paleozoic Era. Many of the oldest known invertebrate fossils occur in this period, the principal types being trilobites, chitinous brachiopods, and primitive graptolites. Name this period. ANSWER: CAMBRIAN PERIOD ERSC-92; Multiple Choice: On the Phanerozoic time scale, which of the following geologic periods occurred approximately 65 to 136 million years ago? Is it: w) Cambrian x) Ordovician y) Carboniferous z) Cretaceous ANSWER: Z -- CRETACEOUS ERSC-92; Multiple Choice: The emergence of land plants is generally accepted as occurring during what period on the geologic time scale: w) Cretaceous x) Triassic y) Permian z) Silurian ANSWER: Z -- SILURIAN Earth Science - 34 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: Angiosperms developed during the: w) Precambrian period x) Cenozoic era y) Paleozoic era z) Mesozoic era ANSWER: Z -- MESOZOIC ERA ERSC-92; Multiple Choice: On a topographic map, lines that connect points of the same elevation are termed: w) benchmarks x) bathymetric lines y) contour lines z) isobars ANSWER: Y -- CONTOUR LINES ERSC-92; Multiple Choice: Of the following, the color blue on a topographic map indicates what surface feature? w) vegetation x) water y) photorevision z) rock formations ANSWER: X -- WATER ERSC-92; Multiple Choice: Of the following choices, the color purple on a topographic map indicates what surface feature? w) vegetation x) water y) photorevision z) rock formations ANSWER: Y -- PHOTOREVISION Earth Science - 35 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: Which of the following names is used to describe the zero degree longitudinal line that runs through Greenwich, England? w) Great Circle x) Principle Line y) Longitudinal Maximum z) Prime Meridian ANSWER: Z --PRIME MERIDIAN ERSC-92; Multiple Choice: Another method of locating points on a map besides the longitude and latitude method which is frequently employed in the western states is known as the: w) Arc Method x) Tier and Range System y) Square Similar Method z) none of these ANSWER: X -- TIER AND RANGE SYSTEM ERSC-92; Multiple Choice: A point of known or assumed elevation on a topographic map is termed: w) benchmark x) contour line y) bathymetric point z) none of these ANSWER: W -- BENCHMARK ERSC-92; Multiple Choice: Which of the following terms is used to describe the angular difference between TRUE north and magnetic north on a topographic map? Is it: w) Magnetic field x) Magnetic intensity y) Magnetic inclination z) Magnetic declination ANSWER: Z -- MAGNETIC DECLINATION Earth Science - 36 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: In geological studies, a fracture in the earth's surface along which movement has taken place is termed: w) tension fracture x) gash fracture y) fault z) none of these ANSWER: Y -- FAULT ERSC-92; Multiple Choice: In geological studies, a fault in the earth's surface in which the hanging wall has moved down relative to the footwall is termed: w) normal fault x) reverse fault y) upthrust fault z) none of these ANSWER: W -- NORMAL FAULT ERSC-92; Multiple Choice: In geological studies, a reverse fault having a di less than 10 degrees is known as which of the following types of faults. w) normal x) overthrust y) strike-slip z) none of the above. ANSWER: X -- OVERTHRUST ERSC-92; Multiple Choice: The San Andreas fault in California is a classic example of which of the following types of faults? w) tear fault x) upthrust fault y) dip-slip fault z) strike-slip fault ANSWER: Z -- STRIKE-SLIP FAULT Earth Science - 37 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: Of the following states, the principal bituminous coal producing state in the United States is: w) Tennessee x) Illinois y) Pennsylvania z) West Virginia ANSWER: Z -- WEST VIRGINIA ERSC-92; Multiple Choice: Continents have three major features. The oldest areas of each continent are the: w) folded mountains x) stable platforms y) mountain cores z) shields ANSWER: Z -- SHIELDS ERSC-92; Short Answer: What is the name for a distinctive fossil that existe over a relatively large part of the earth during a short time of earth history? ANSWER: INDEX FOSSIL ERSC-92; Multiple Choice: Cordaites (pron: kor-day-i-tees) were the ancestor of one of the following. Were they primitive: w) amphibians x) cone-bearing trees y) snakes z) sharks ANSWER: X -- CONE-BEARING TREES ERSC-92; Multiple Choice: The fossils found in the tar pits of Rancho La Bre in Los Angeles included all of the following EXCEPT one. Which one was absent? w) saber-toothed cat x) dire wolf y) wooly mammoth z) giant ground sloth ANSWER: Y -- WOOLY MAMMOTH Earth Science - 38 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: The fossil archaeopteryx is the earliest known example of: w) mammal x) fish y) bird z) snake ANSWER: Y -- BIRD ERSC-92; Short Answer: Name the famous scientist who, in 1835, discovered seashell fossils 13,000 feet up in the Andes. ANSWER: CHARLES DARWIN ERSC-92; Multiple Choice: Large streams that enter a standing body of water produce which of the following geological features at their mouths? w) deltas x) load casts y) anticlines z) sync (pron: sink) ANSWER: W -- DELTAS ERSC-92; Short Answer: What are tidal waves called that surge up rivers from narrow estuaries called? ANSWER: TIDAL BORES ERSC-92; Multiple Choice: The Cromwell Current is a subsurface current that flows how? Does it flow: w) west in the Atlantic Ocean x) east in the Atlantic Ocean y) east in the Pacific Ocean z) west in the Pacific Ocean ANSWER: Y -- EAST IN THE PACIFIC OCEAN Earth Science - 39 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: Crinoids are the same as one of the following. Which one is it? Is it w) algae x) sea scorpions y) sea lilies z) lobe-finned fishes ANSWER: Y -- SEA LILIES ERSC-92; Multiple Choice: Which one of the following seas has the lowest salinity? w) Baltic x) Dead y) Mediterranean z) Red ANSWER: W -- BALTIC ERSC-92; Short Answer: What is the name given to the excessive growth of algae and other primary producers in streams and lakes as a result of an input of soil nutrients? The name begins with the letter "E". ANSWER: EUTROPHICATION ERSC-92; Multiple Choice: In an ocean, the upper layer of water with sufficient light penetration to support photosynthesis by aquatic plants i known as the: w) free zone x) plant zone y) photic zone z) primary zone ANSWER: Y -- PHOTIC ZONE ERSC-92; Multiple Choice: Caves are frequently associated with a certain kin of topography that includes sinkholes, disappearing streams and many limestone outcrops. With which of the following topographies are such features related? w) arid topography x) valley and ridge topography y) Karst topography z) none of these ANSWER: Y -- KARST TOPOGRAPHY Earth Science - 40 Science Bowl EARTH SCIENCE ERSC-92; Multiple Choice: Most cave deposits form from which of the followin minerals? w) hematite x) calcite y) quartz z) none of these ANSWER: X -- CALCITE ERSC-93; Multiple Choice: A pair of rivers that mark the approximate southern limit of the Ice Age glaciers in North America are the Missouri and which of the following? w) St. Lawrence x) Ohio y) Delaware z) Tennessee ANSWER: X -- OHIO ERSC-93; Multiple Choice: Which of the following number of years best approximates the length of time since the last ice age in the United States? w) 1,000,000 x) 1,000 y) 11,000 z) 250,000 ANSWER: Y -- 11,000 ERSC-93; Short Answer: What is molten rock that remains underground called? ANSWER: MAGMA ERSC-93; Short Answer: Name the volcano in the continental United States that erupted in May 1980. ANSWER: MOUNT ST. HELENS ERSC-93; Multiple Choice: The Hawaiian Islands are what type of volcano? w) shield x) composite y) cinder cone ANSWER: W -- SHIELD Earth Science - 41 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: The internal structure of crystals was first studied with which of the following? w) x-rays x) isotopes y) electron microscopes z) lasers ANSWER: W -- X-RAYS ERSC-93; Short Answer: What is the world's largest active volcano? ANSWER: MAUNA LOA, HAWAII ERSC-93; Multiple Choice: In geological studies, cemented volcanic ash is called: w) caldera x) a-a y) lava z) tuff ANSWER: Z -- TUFF ERSC-93; Multiple Choice: All of the following are TRUE of the Paricutin volcano except w) its slopes are steep x) it is a lava cone y) it is located in Mexico z) it was built over a short period of time ANSWER: X -- IT IS A LAVA CONE ERSC-93; Multiple Choice: Iceland is least likely to have w) a fissure eruption x) a lava plateau y) an explosive eruption z) a shield volcano ANSWER: Y -- AN EXPLOSIVE ERUPTION Earth Science - 42 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: The principal volcanic gas (in terms of quantity) is: w) carbon dioxide x) nitrogen dioxide y) sulfur dioxide z) steam (H2O) ANSWER: Z -- STEAM (H2O) ERSC-93; Multiple Choice: Which of the following elements is found in the earth's crust as both a native element and as a compound? w) argon x) copper y) chlorine z) silicon ANSWER: X -- COPPER ERSC-93; Multiple Choice: According to the protoplanet hypothesis, the solar system begins as which of the following? w) a star x) a vacuum y) a huge cloud of dust and gas z) a group of comets. ANSWER: Y -- A HUGE CLOUD OF DUST AND GAS ERSC-93; Multiple Choice: On which one of the following is the largest known volcanic cone in the solar system located? w) Earth x) Io y) Mars z) the moon ANSWER: Y -- MARS Earth Science - 43 Science Bowl EARTH SCIENCE ERSC-93; Short Answer: Mount St. Helens is one of the more active volcanos in the United States today. In what state is Mount St. Helens located? ANSWER: WASHINGTON ERSC-93; Multiple Choice: What type of rocks are formed as a result of volcanic activity? w) metamorphic x) sedimentary y) igneous z) Hudson ANSWER: Y -- IGNEOUS ERSC-93; Short Answer: This world-famous volcano erupted in 79 A.D., 1139, 1631, 1779, 1793, 1872, 1906, and 1944. Name this volcano. ANSWER: MT. VESUVIUS ERSC-93; Short Answer: Name the very old mountain belt located in southern Missouri and Northern Arkansas. ANSWER: OZARKS ERSC-93; Short Answer: Name the mountain range, located in South America, which runs through Peru. ANSWER: ANDES ERSC-93; Multiple Choice: In which of the following mountain ranges are volcanic rocks least common? w) Andes x) Cascades y) Himalayas z) Sierra Nevadas ANSWER: Y -- HIMALAYAS Earth Science - 44 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: Which of the following mountain ranges were formed as a result of volcanic action? w) Appalachians x) Teton Range y) Front Range z) Cascade Range ANSWER: Z -- CASCADE RANGE ERSC-93; Multiple Choice: Which of the following is the most important erosional and transportation agent? w) wind x) water y) glaciers z) none of the above ANSWER: X -- WATER ERSC-93; Multiple Choice: Winds are classed as agents of erosion rather than of weathering because: w) they have nothing to do with the weather x) they carry rock particles away y) they work only part of the time z) they build up rather than wear down the rock ANSWER: X -- THEY CARRY ROCK PARTICLES AWAY ERSC-93; Multiple Choice: Carbonic acid is extremely active in the chemical weathering of: w) feldspar x) quartz y) carbon z) quartzite ANSWER: W -- FELDSPAR Earth Science - 45 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: Of the following minerals, the one most resistant to both chemical and mechanical weathering is: w) calcite x) muscovite y) hornblende z) quartz ANSWER: Z -- QUARTZ ERSC-93; Multiple Choice: When shale weathers, it forms mostly: w) clay x) quartz y) soluble carbonates z) slate ANSWER: W -- CLAY ERSC-93; Multiple Choice: Waste gases from industrial plants form acids that hasten chemical weathering. Most of the gases are compounds of: w) argon x) hydrogen y) iron z) sulfur ANSWER: Z -- SULFUR ERSC-93; Multiple Choice: Which one of the following is an example of chemical weathering? w) the splitting of a boulder x) the grinding of pebbles into sand y) the cleavage of a feldspar crystal z) the rusting of hornblende ANSWER: Z -- THE RUSTING OF HORNBLENDE Earth Science - 46 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: The oxygen in the earth's atmosphere was probably produced by which of the following? w) volcanos x) photosynthetic organisms y) radioactive minerals z) meteors ANSWER: X -- PHOTOSYNTHETIC ORGANISMS ERSC-93; Multiple Choice: How much of the sun's total radiation actually reaches the earth? Is it one part in w) 2,000 x) 200,000 y) 2 million z) 2 billion ANSWER: Z -- ONE PART IN 2 BILLION ERSC-93; Multiple Choice: To what does the atmosphere's "greenhouse effect" refer to? w) the fact that ozone reflects ultraviolet radiation x) the fact that air prevents heat from leaving the earth y) the fact that clouds prevent sunlight from reaching the earth z) the fact that green plants use sunlight to produce food ANSWER: X -- THE FACT THAT AIR PREVENTS HEAT FROM LEAVING THE EARTH ERSC-93; Short Answer: What is the name given to the term that defines the proportion of the incident solar radiation which is diffusely reflected from the atmosphere and surface of the planet back into outer space? ANSWER: ALBEDO ERSC-93; Short Answer: What is the name of the electromagnetic radiation in the range of 0.4 to 0.7 microns? ANSWER: VISIBLE LIGHT Earth Science - 47 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: What name is given to the science which studies the atmosphere? w) oceanography x) atmospherology y) meteorology z) weatherology ANSWER: Y -- METEOROLOGY ERSC-93; Multiple Choice: The available incoming solar radiation is known as: w) reflection x) insolation y) reradiation z) absorption ANSWER: X -- INSOLATION ERSC-93; Multiple Choice: You are flying between Chicago and San Francisco on a commercial jet. The pilot comes on the public address system and announces that the plane's cruising altitude is 40,000 feet. At this altitude are you in the: w) troposphere x) stratosphere y) ozonosphere z) chemosphere ANSWER: X -- STRATOSPHERE ERSC-93; Short Answer: The gaseous water density of the atmosphere is more commonly known as what? ANSWER: HUMIDITY ERSC-93; Multiple Choice: Which region of the electro-magnetic spectrum will cause sunburns? w) ultraviolet x) infrared y) visible ANSWER: W -- ULTRAVIOLET Earth Science - 48 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: Which of the following processes doesn't account for an increase in atmospheric CO2 (carbon dioxide) levels? w) deforestation x) photosynthetic processes y) plant respiration z) fossil fuel combustion ANSWER: X -- PHOTOSYNTHETIC PROCESSES ERSC-93; Short Answer: The ozone in the atmosphere helps to block out excess of what type of rays? ANSWER: ULTRAVIOLET LIGHT ERSC-93; Multiple Choice: Global climate change is being attributed to the atmospheric increase in what two gases produced by human activities? w) ozone and methane x) nitrous oxide and sulfur dioxide y) methane and carbon dioxide z) ozone and carbon monoxide ANSWER: Y -- METHANE AND CARBON DIOXIDE ERSC-93; Multiple Choice: According to the French scientist Buffon, the solar system formed when our sun w) was first formed x) collided with a comet y) began to cool down z) began to expand. ANSWER: X -- COLLIDED WITH A COMET ERSC-93; Multiple Choice: Which element in chlorofluorocarbons (CFCs) is responsible for destroying the Earth's ozone layer? w) oxygen x) fluorine y) chlorine z) bromine ANSWER: Y -- CHLORINE Earth Science - 49 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: The Coriolis effect is responsible for which atmospheric phenomenon? w) trade winds x) the jet stream y) monsoons z) hurricanes ANSWER: Z -- HURRICANES ERSC-93; Multiple Choice:Which of the following reasons explains why quartz cannot be identified by its color alone? w) Its color is too faint. x) It has no color. y) It exists in a variety of colors. z) Its color fades. ANSWER: Y -- IT EXISTS IN A VARIETY OF COLORS ERSC-93; Multiple Choice: Which of the following causes the oblate spheroid shape of the earth? w) the earth's magnetism x) the earth's gravity y) the earth's rotation z) the moon's tidal pull ANSWER: Y -- THE EARTH'S ROTATION ERSC-93; Multiple Choice: Which of these events gives us evidence that the earth is spherical? w) a volcanic eruption x) an earthquake y) an eclipse of the moon z) the earth's rotation ANSWER: Y -- AN ECLIPSE OF THE MOON Earth Science - 50 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: Which one of these is NOT true? w) All planets revolve in the same direction. x) All planets rotate in the same direction. y) The orbits of the planets are all ellipses. z) The orbits of the planets are nearly in the same plane. ANSWER: X -- ALL PLANETS ROTATE IN THE SAME DIRECTION. ERSC-93; Multiple Choice: An area that is not in a major earthquake belt is the region of the w) Andes mountains x) Coast Ranges of Central America y) Appalachian Mountains z) the islands of Japan ANSWER: Y -- APPALACHIAN MOUNTAINS ERSC-93; Multiple Choice: A city that suffered a major earthquake, but is not on a plate boundary, is w) Los Angeles, California x) San Francisco, California y) Tokyo, Japan z) Charleston, South Carolina ANSWER: Z -- CHARLESTON, SOUTH CAROLINA ERSC-93; Multiple Choice: Which of the following is TRUE of an earthquake's epicenter and focus? w) they are the same x) the focus is above the epicenter y) the epicenter is at the earth's surface z) the focus is at the earth's inner core ANSWER: Y -- THE EPICENTER IS AT THE EARTH'S SURFACE Earth Science - 51 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: Most earthquakes originate at depths of between w) the surface and 100 kilometers x) 100 kilometers and 500 kilometers y) 500 kilometers and 700 kilometers z) 700 kilometers and the outer core ANSWER: W -- THE SURFACE AND 100 KILOMETERS ERSC-93; Multiple Choice: The most powerful earthquake ever recorded in North America had a Richter scale magnitude closest to w) 6.5 x) 7.5 y) 8.5 z) 9.5 ANSWER: Y -- 8.5 ERSC-93; Multiple Choice: Waves generated by underwater earthquakes are called: w) tsunamis (pronounced su-nam-ees) x) a bore y) a tidal wave z) neap tidal wave ANSWER: W -- TSUNAMIS ERSC-93; Multiple Choice: What is the chemical formula for quartz? w) CaCO-3 x) SiO-2 y) Fe-2O-3 z) none of these ANSWER: X -- SiO-2 ERSC-93; Short Answer: Which is a metamorphic rock, slate or shale? ANSWER: SLATE Earth Science - 52 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: Rocks formed in layers are said to be: w) crystalline x) stratified y) chemical z) metamorphosed ANSWER: X -- STRATIFIED ERSC-93; Multiple Choice: Coal is believed to have been principally formed in which of the following types of environment? w) river beds x) swamps y) volcanic regions z) deserts ANSWER: X -- SWAMPS ERSC-93; Multiple Choice: A rock composed of cemented sand and gravel is: w) shale x) conglomerate y) granite z) marble ANSWER: X -- CONGLOMERATE ERSC-93; Multiple Choice: When clay hardens into rock, it forms: w) coal x) limestone y) shale z) quartzite ANSWER: Y -- SHALE ERSC-93; Multiple Choice: Our sun is a w) protostar x) main-sequence star y) variable star z) dwarf star ANSWER: X -- MAIN-SEQUENCE STAR Earth Science - 53 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: Which geologic period does not belong in the Mesozoic era? w) Permian x) Cretaceous y) Triassic z) Jurassic ANSWER: W -- PERMIAN ERSC-93; Multiple Choice: What type of map projection is most appropriate for navigation charts? w) Conic x) Mercator y) Polar z) Cartesian ANSWER: X -- MERCATOR ERSC-93; Multiple Choice: What is the range of the Mid-Atlantic Ridge? w) from Cuba to the Azores x) from Iceland to Antarctica y) from Cape Hatteras to Gibraltar z) from Cape Horn to the Cape of Good Hope ANSWER: X -- FROM ICELAND TO ANTARCTICA ERSC-93; Multiple Choice: Fossils are rarely found in such rocks as: w) limestone x) sandstone y) shale z) granite ANSWER: Z -- GRANITE Earth Science - 54 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: As we have seen with Hurricane Andrew, natural forces can cause great loss of human life. Which of the following natural disasters has resulted in the greatest loss of human life in a single occurrence? w) typhoon x) volcanic eruption y) earthquake z) tornado ANSWER: Y -- EARTHQUAKE (ON JANUARY 23, 1556, 830,000 PEOPLE DIED IN SHENSI, CHINW) ERSC-93; Multiple Choice: The rock in which ground water is LEAST likely to form caverns is: w) sandstone x) limestone y) salt z) rock gypsum ANSWER: W -- SANDSTONE ERSC-93; Multiple Choice: The longest era was the w) Mesozoic x) Precambrian y) Cenozoic z) Paleozoic ANSWER: X -- PRECAMBRIAN ERSC-93; Multiple Choice: On the Richter scale, a magnitude 6 earthquake is how much larger than a magnitude 4 earthquake? w) 1.5 times x) 4 times y) 15 times z) 100 times ANSWER: Z -- 100 TIMES Earth Science - 55 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: The air around a high pressure area circulates: w) clockwise in the Northern Hemisphere x) counterclockwise in the Northern Hemisphere y) clockwise in the Southern Hemisphere z) in either direction regardless of hemisphere ANSWER: W -- CLOCKWISE IN THE NORTHERN HEMISPHERE ERSC-93; Multiple Choice: The principal mineral in most sand beaches is w) quartz x) orthoclase y) magnetite z) muscovite ANSWER: W -- QUARTZ ERSC-93; Multiple Choice: The oldest rocks that contain abundant fossils are: w) Precambrian x) Paleozoic y) Mesozoic z) Cenozoic ANSWER: X -- PALEOZOIC ERSC-93; Multiple Choice: The wind-chill index outside is -10 F when the wind blows at 20 mph and the air temperature is 20 F. To what temperature will a dry object cool when placed outside? w) 20 F x) 10 F y) -10 F z) -20 F ANSWER: W -- 20 F ERSC-93; Multiple Choice: A geologic feature called a kimberlite indicates the possibility of thepresence of which of the following? w) rubies x) diamonds y) sapphires z) opals ANSWER: X -- DIAMONDS Earth Science - 56 Science Bowl EARTH SCIENCE ERSC-93; Short Answer: Rocks are classified depending upon how they are formed. In which class would marble be found? ANSWER: METAMORPHIC ERSC-93; Short Answer: In terms of the mass of material ejected into the atmosphere, what is the name of the largest volcanic eruption of this century, and where was it located? ANSWER: MOUNT PINATUBO, PHILIPPINES ERSC-93; Short Answer: Which stone, usually green, was used for Chinese, Aztec and Mayacarvings? ANSWER: JADE ERSC-93; Multiple Choice: Which of the following minerals is a source of lead? w) Bauxite x) Hematite y) Malachite z) Galena ANSWER: Z -- GALENA ERSC-93; Multiple Choice: Which of the following is the mineral name for ordinary salt? w) biotite x) calcite y) halite z) dolomite ANSWER: Y -- HALITE ERSC-93; Short Answer: After what geophysical occurrence might you see Bishop's Ring around the sun? ANSWER: VOLCANIC ERUPTION Earth Science - 57 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: The core of the earth is thought to be composed of which of the following? w) basalt and granite x) compressed gases y) uranium and lead z) iron and nickel ANSWER: Z -- IRON AND NICKEL ERSC-93; Multiple Choice: Safety aside, for which of the following reasons is alcohol used in preference to mercury in a minimum thermometer? w) Alcohol has a higher boiling point x) Alcohol has a lower freezing point y) Alcohol contracts more uniformly z) Alcohol can be dyed for visibility ANSWER: X -- ALCOHOL HAS A LOWER FREEZING POINT ERSC-93; Multiple Choice: Which of the following distances in kilometers is closest to the diameter of the earth? w) 750 kilometers x) 2,750 kilometers y) 12,750 kilometers z) 127,500 kilometers ANSWER: Y -- 12,750 KILOMETERS ERSC-93; Multiple Choice: Which of the following is the approximate ratio of the area of the continents to the area of the earth's oceans? w) 2:1 x) 1:1 y) 2:5 z) 1:10 ANSWER: Y -- 2:5 Earth Science - 58 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: In geological studies, the Mohorovicic Discontinuity, commonly called the Moho, is the boundary between the w) the mantle and the crust x) asthenosphere and the mantle y) mantle and the outer core z) outer core and the inner core ANSWER: W -- THE MANTLE AND THE CRUST ERSC-93; Short Answer: To the nearest half degree, the Arctic Circle is at what latitude? ANSWER: 66 AND 1/2 DEGREES or 66 AND 1/2 DEGREES NORTH ERSC-93; Short Answer: Name the gaseous hydrocarbon that occurs naturally in sedimentary strata. ANSWER: METHANE (CH4) ERSC-93; Multiple Choice: Biomass energy is w) formed through photosynthesis x) caused by heat due to the large mass of the Earth y) has been used for only a few years z) the predominant source of commercial heat energy in the northern regions of the United States ANSWER: W -- FORMED THROUGH PHOTOSYNTHESIS ERSC-93; Multiple Choice: Which animal is the center of the timber-harvest controversy in the Pacific Northwest? w) blackfooted ferret x) California condor y) northern spotted owl z) gray wolf ANSWER: Y -- NORTHERN SPOTTED OWL Earth Science - 59 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: North American Indians used this mineral of volcanic origin to make tips for arrows: w) obsidian x) quartz y) flint z) pumice ANSWER: W -- OBSIDIAN ERSC-93; Short Answer: Certain clay layers deposited at the end of the cretaceous period are enriched in what element? ANSWER: IRIDIUM ERSC-93; Multiple Choice: The largest single component, by weight, in the average American landfill is: w) toxic waste x) diapers y) newspapers z) pizza boxes ANSWER: Y -- NEWSPAPERS ERSC-93; Multiple Choice: Carbon dioxide is an important greenhouse gas. What is the current rate in parts per million per year of atmospheric increase of this gas? w) 0.15 ppm per year (parts per million) x) 1.5 ppm per year y) 15 ppm per year z) 150 ppm per year ANSWER: X -- 1.5 PPM PER YEAR ERSC-93; Multiple Choice: When the front of a glacier is stationary for a long time, the glacier will do which of the following? w) form many crevasses x) melt away y) not erode its bed z) build a large terminal moraine ANSWER: Z -- BUILD A LARGE TERMINAL MORAINE Earth Science - 60 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: Valleys formed by glaciers always have which of the following characteristics? w) U-shaped cross sections x) straight courses y) uniform slopes z) bedrock floors ANSWER: W -- U-SHAPED CROSS SECTIONS ERSC-93; Multiple Choice: The approximate average yearly rainfall in centimeters for the United States is: w) 25 centimeters x) 50 centimeters y) 75 centimeters z) 100 centimeters ANSWER: Y -- 75 CENTIMETERS ERSC-93; Multiple Choice: When does the air cool most rapidly? Is it during w) a cloudy day x) a cloudy night y) a sunny day z) a clear night ANSWER: Z -- A CLEAR NIGHT ERSC-93; Multiple Choice: What form of runoff is water that flows down a slope within the upper layers of the soil rather than on top of them? w) interflow x) extraflow y) endoflow z) detrital runoff ANSWER: W -- INTERFLOW ERSC-93; Short Answer: A falling barometer often means rainy weather because water vapor is (lighter or heavier) than oxygen or nitrogen. ANSWER: LIGHTER Earth Science - 61 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: What is considered to be the approximate difference in average temperature between the "little ice age" and today? w) 1 to 3 degrees centigrade x) 5 to 8 degrees centigrade y) 10 to 12 degrees centigrade z) 15 to 20 degrees centigrade ANSWER: W -- 1 TO 3 DEGREES CENTIGRADE ERSC-93; Multiple Choice: On which of the following does the capacity of a kilogram of air for holding water depend? w) the air pressure x) the air temperature y) the dust content of the air z) the ions in the air ANSWER: X -- THE AIR TEMPERATURE ERSC-93; Multiple choice: What is considered to be the oldest lake in North America? w) Mono Lake, CA x) Lake Superior, MI y) The Great Salt Lake, UT z) Crater Lake, OR ANSWER: W -- MONO LAKE, CA ERSC-93; Multiple Choice: When the difference in the temperature of the wet-bulb thermometer and dry-bulb thermometer is large, what does it indicate about the air? w) it is very dry x) it is nearly saturated y) it is very warm z) it is very cold ANSWER: W -- IT IS VERY DRY Earth Science - 62 Science Bowl EARTH SCIENCE RSC-93; Multiple Choice: Which of the following is an average number of inches of snow equal to one inch of rain? w) 1 inch x) 5 inches y) 10 inches z) 25 inches ANSWER: Y -- 10 inches ERSC-93; Multiple Choice: Cloud droplets unite most easily to form raindrops in clouds containing which of the following substances? w) ozone x) plant pollen y) carbon tetrachloride z) large salt crystals ANSWER: Z -- LARGE SALT CRYSTALS ERSC-93; Multiple Choice: Sulfuric acid aerosols from the eruption of Mt. Pinatubo reduced the rate of global warming last year. They also contributed to the record size of: w) acid rainfalls in Europe x) the anchovy catch off Peru y) the ozone hole over Antarctica z) fish kills in the Amazon River ANSWER: Y -- THE OZONE HOLE OVER ANTARCTICA ERSC-93; Short Answer: What is another name for the 180th meridian? ANSWER: INTERNATIONAL DATE LINE ERSC-93; Multiple Choice: Which of the following mountain ranges was formed during the Mesozoic era? w) Rocky Mountains x) Cascades y) Appalachian z) Sierra Nevada ANSWER: Z -- SIERRA NEVADA Earth Science - 63 Science Bowl EARTH SCIENCE ERSC-93; Multiple Choice: What mineral is the most dense? w) hematite x) cinnabar y) marcasite z) rhodochrosite ANSWER: X -- CINNABAR ERSC-93; Multiple Choice: Pangaea is the name of a former continent that included: w) all the continents x) only Europe and Asia y) only South America and Africa z) only North and South America ANSWER: W -- ALL THE CONTINENTS Earth Science - 64