Geology Basics: Waves, Earth's Structure, Rocks
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Questions and Answers

Which types of waves can travel through both solid and liquid materials?

  • S waves (correct)
  • Neither S nor P waves
  • P waves
  • Both S and P waves
  • Which layer of the Earth is primarily composed of nickel and iron?

  • Core (correct)
  • Upper mantle
  • Mantle
  • Crust
  • Which statement about Earth's crust and core is correct?

  • The upper crust is called the lithosphere
  • The crust is referred to as the 'nife' layer
  • The inner core is liquid while the outer core is solid
  • Oceanic crust is thinner than continental crust (correct)
  • What does the term lithosphere refer to?

    <p>Crust and upper mantle</p> Signup and view all the answers

    Which statement about the formation of rocks is correct?

    <p>Igneous rock forms directly from cooled magma or lava</p> Signup and view all the answers

    What factor contributes to the color variations in quartz?

    <p>Presence of impurities</p> Signup and view all the answers

    Which type of rock consists of layers of different thickness?

    <p>Sedimentary rock</p> Signup and view all the answers

    Which rock type is not classified as a sedimentary rock?

    <p>Marble</p> Signup and view all the answers

    Which of the following is a salient feature of metamorphic rocks?

    <p>Crystalline</p> Signup and view all the answers

    Tillite is classified as which type of rock?

    <p>Sedimentary rock</p> Signup and view all the answers

    Which processes are involved in mountain building?

    <p>Orogenic processes and epeirogenic processes</p> Signup and view all the answers

    According to Wegener's theory, what does PANTHALASSA refer to?

    <p>Mega-ocean</p> Signup and view all the answers

    Which among the following pairs is correctly matched regarding tectonic plates?

    <p>Arabian plate : Mostly the Saudi Arabian landmass</p> Signup and view all the answers

    What type of plate boundary is the Indian plate along the Himalayan mountains?

    <p>Continent-continent convergence</p> Signup and view all the answers

    Which type of plate boundary is associated with the Mid-Atlantic Ridge?

    <p>Divergent boundary</p> Signup and view all the answers

    In which stage of landform development is downward cutting predominant?

    <p>Youth stage</p> Signup and view all the answers

    What type of tide occurs with two high tides and two low tides each day?

    <p>Semi-diurnal tide</p> Signup and view all the answers

    Which phase of the moon corresponds to the minimum distance between the Earth and the moon?

    <p>Perigee</p> Signup and view all the answers

    What term describes the type of farming focused on growing vegetables?

    <p>Truck farming</p> Signup and view all the answers

    During which decade did India experience a negative growth rate in population?

    <p>1971-1981</p> Signup and view all the answers

    Who introduced the concept of human development?

    <p>Dr. Mahbub-ul-Haq</p> Signup and view all the answers

    Which option best defines the term 'Lapies'?

    <p>An irregular surface with sharp pinnacles, grooves, and ridges</p> Signup and view all the answers

    Which of the following statements is NOT correct regarding landforms?

    <p>Alluvial fans in humid areas appear as high cones with steep slopes.</p> Signup and view all the answers

    What rises up from the floor of the caves?

    <p>Stalagmites</p> Signup and view all the answers

    Which of the following is considered an erosional feature?

    <p>Cave</p> Signup and view all the answers

    What is a deep, long and wide trough or basin with very steep high walls called?

    <p>Glacial valley</p> Signup and view all the answers

    What is known as smooth oval shaped ridge-like features composed mainly of glacial till?

    <p>Drumlins</p> Signup and view all the answers

    Which type of lake is referred to as salt lakes?

    <p>Playas</p> Signup and view all the answers

    What are crescent shaped dunes called?

    <p>Barchans</p> Signup and view all the answers

    Which types of tropical storms are correctly matched with their location?

    <p>All of the above</p> Signup and view all the answers

    What conditions are necessary for the formation of tropical storms?

    <p>High sea surface temperatures, presence of Coriolis force, and low wind speed variability</p> Signup and view all the answers

    Which type of cloud is typically found at high altitudes (8,000 - 12,000m)?

    <p>Cirrus</p> Signup and view all the answers

    Which statement correctly describes the Labrador Current?

    <p>It is a cold current in the North Atlantic Ocean.</p> Signup and view all the answers

    Which of the following statements about dew is incorrect?

    <p>Dew forms only when the dew point is below the freezing point.</p> Signup and view all the answers

    Which type of clouds are layered and cover large portions of the sky?

    <p>Stratus</p> Signup and view all the answers

    Which of the following correctly pairs a front with its description?

    <p>Occluded front - air mass fully lifted above land</p> Signup and view all the answers

    Which of the following are minor relief features of the ocean?

    <p>All of the above</p> Signup and view all the answers

    Study Notes

    Seismic waves

    • S waves travel only through solid materials
    • P waves travel through solid, liquid and gaseous materials

    Earth's Structure

    • Earth's core is made up of nickel and iron
    • Oceanic crust is thinner than continental crust
    • The upper portion of the mantle is called the asthenosphere
    • The inner core is solid while the outer core is liquid
    • The lithosphere is made up of the crust and upper mantle

    Rocks

    • Igneous rocks are formed when magma or lava cools and solidifies
    • Metamorphic rocks are formed under the action of pressure, volume, and temperature
    • Quartz can be white, green, red, or yellow due to impurities
    • The Mohs Hardness Scale measures the resistance of minerals to scratching
    • The order of hardness for the minerals listed is: Talc (1), Gypsum (2), Feldspar (3), and Diamond (4)
    • Sedimentary rocks are formed through the process of lithification.
    • Geyserite, chalk, and shale are all organically formed rocks
    • Sandstone is a chemically formed rock
    • Granite is primarily made up of silica and aluminum
    • Marble is a metamorphic rock
    • Sandstone, conglomerate, and limestone are examples of sedimentary rocks
    • Syenite, slate, and schist are examples of metamorphic rocks
    • Sedimentary rocks are characterized by layers of varying thicknesses

    Plate Tectonics

    • Orogenic processes involve mountain building
    • Epeirogenic processes involve uplift or warping of large parts of the Earth's crust
    • Plate tectonics involves the horizontal movement of crustal plates
    • The supercontinent Pangaea was surrounded by a single ocean called Panthalassa
    • The Cocos plate exists between Central America and the Pacific plate
    • The Nazca plate exists between the Asiatic and Pacific plate
    • The Arabian plate primarily covers the Saudi Arabian landmass
    • The Himalayan mountains are formed by a continent-continent convergence boundary between the Indian plate and the Eurasian plate
    • The Mid-Atlantic Ridge is formed by a divergent plate boundary

    Landforms

    • The Polar fleeing force is related to the rotation of the Earth
    • The Pacific plate is primarily oceanic
    • The Eurasian plate is primarily continental
    • The Arabian plate, Pacific plate, Antarctica plate, and Eurasian plate are all major plates
    • Youth stage landforms are dominated by downward cutting
    • Gorges are deep valleys with steep sides
    • Canyons have steep, step-like side slopes
    • A gorge is wider at the top than the bottom
    • A canyon's width is relatively consistent
    • Gullies, rills, gorges, and canyons are formed by running water
    • Lapies are irregular surfaces with sharp pinnacles, grooves, and ridges
    • Alluvial fans in humid areas have gentle slopes, while those in arid areas have steep slopes
    • Natural levees are found along the banks of large rivers
    • Meanders are landforms formed by running water
    • Point bars, or meander bars, are found on the concave side of a river's meander
    • Stalagmites rise up from the floor of caves
    • Caves, bars, spits, and beaches are all erosional features
    • Cirques are deep, long, and wide troughs or basins with steep concave walls
    • Drumlins are smooth oval-shaped ridge-like features composed of glacial till
    • Playas are salt lakes
    • Barchans are crescent-shaped dunes
    • Wind causes deflation, abrasion, and attrition

    Atmosphere

    • Water vapor content in the atmosphere decreases from the equator to the poles
    • Dust particle concentration is higher in equatorial and polar regions than in subtropical and temperate regions
    • Air density is highest near the Earth's surface and decreases with altitude
    • The Coriolis force deflects winds to the right in the northern hemisphere and to the left in the southern hemisphere
    • The Intertropical Convergence Zone (ITCZ) is where the trade winds from either side of the equator converge
    • An occluded front occurs when an air mass is fully lifted above the land surface.

    Weather

    • A cold front forms when a cold air mass moves towards a warm air mass
    • A warm front forms when warm air moves towards a cold air mass
    • A tropical storm requires a large sea surface with temperatures greater than 27°C, the Coriolis force, and small variations in vertical wind speed
    • Cirrus clouds are formed at high altitudes (8,000-12,000 m)
    • Stratus clouds are layered clouds that cover large portions of the sky

    Oceans

    • The Labrador Current is a cold current in the North Atlantic Ocean.
    • The Falkland Current is a warm current that flows along the Chilean coast of the South Pacific Ocean
    • Dew forms under clear skies, calm air, high relative humidity, and cold nights
    • The dew point must be above the freezing point for dew to form
    • Fog and mist are both forms of condensation, but fog has a higher moisture content
    • Seamounts, mid-oceanic ridges, and submarine canyons are all minor relief features in the ocean

    Tides

    • Spring tides occur when the Sun and Moon pull the Earth gravitationally in the same direction
    • Two high tides and two low tides occur each day, known as a semi-diurnal tide
    • The Moon is closest to Earth at perigee

    Solar System

    • The inner planets are those located between the Sun and the asteroid belt
    • Eons are the longest units of geological time

    Human Geography

    • The concept of human development was introduced by Dr. Mahbub-ul-Haq
    • Truck farming is a specialized form of agriculture that focuses on vegetables
    • India's population experienced negative growth rate from 1911-1921
    • The Bora is a cold and dry wind that blows down from the mountains in the region of the eastern shore of the Adriatic Sea

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    Description

    Test your knowledge on seismic waves, the structure of the Earth, and different types of rocks. This quiz covers essential concepts such as the properties of S and P waves, layers of the Earth, and rock formation processes. Perfect for geology enthusiasts and students alike!

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