Earth Science Final

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What is the difference between weathering and erosion?

weathering is the creation of loose particles and erosion is the removal of these pieces from the landscape

Which of the following types of weathering can occur without water?

exfoliation

Which of the following best describes the hydrolysis reaction?

minerals reacting with slightly acidic water to form new minerals and dissolved ions

Which of the following are arranged from finest to coarsest-grained clastic sedimentary rock?

mudstone, sandstone, conglomerate

In which of the following sedimentary environments would you expect the sand deposits to be poorly sorted?

alluvial fan

In which of the following climates will chemical weathering be most rapid?

hot and humid

Which of the following may reveal the direction of a stream current?

asymmetrical ripple

The two important criteria used for igneous rock classification are _____

mineral composition and texture

An igneous rock with minerals that can be seen with the unaided eye exhibits:

phaneritic texture

If a body of magma is subjected to fractional crystallization, the remaining magma that results is expected to be:

more felsic than the magma

Hawaiian volcanic eruptions are not too dangerous because:

the silica content of the magma is low

Which of the following best describes a granite?

a light-colored, coarse-grained igneous rock rich in silica

Important volatiles in magmas include ____

water and carbon dioxide

Which of the following properties increases in the direction of the arrows in the sentence above?

melting temperature

An igneous rock can become a metamorphic rock through the processes of:

recrystallization and reaction

A _____ is the original, unmetamorphosed rock which is a given metamorphic rock is formed

Protolith

The main processes that control the formation of metamorphic rocks are?

Solid-state reaction and recrystallization

The primary difference between phyllite and schist is____

Mica crystals within schist are larger than those within phyllite

The primary difference between lithostatic pressure and directed stress is:

Lithostatic pressure pushes in on rocks equally from all sides, whereas directed stress is greater in one or more directions

Which series shows the progression of a metamorphic rock from original deposition of a mudstone protolith to the highest grade of metamorphism?

mud - shale - slate - phyllite - schist -gneiss

An index mineral is defined as _____

a mineral whose appearance in a rock indicates a specific set of metamorphic conditions

A metamorphic facies is best defined as a group of rocks that:

were metamorphosed under similar pressure and temperature conditions

The blueschist facies form under which of the following conditions?

high pressure but relatively low temperature

The breakdown of exposed rocks into small fragments is termed _______

A felsic intrusive rock common in the continental crust is ____, and its extrusive equivalent is _____. Oceanic crust is primarily composed of ________, which crystallizes at depth in the earth, and is compositionally equivalent to _____ at the surface

________ is the primary control on the texture (grain size) of igneous rocks

During the crystallization process, the first minerals to crystallize are the most: mafic or felsic?

Name three of the four principal factors controlling metamorphism ______, _____, and _______

___________ is a pervasive planar fabric within a rock that is formed by directed stress during deformation and metamorphism

List 4 types of metamorphism:

__________ is the protolith for quartzite

________ is a non-foliated metamorphic rock whose protolith is comprised of altered limestone

the primary basis on which a hypothesis may be elevated to the status of a theory is:

the repeated confirmation of the hypothesis by observation and experimentation

The principle of ______ states the present is the key to the past

uniformitarianism

An unconformity is an _______

erosional surface

The geologic time scale is broken up into several sub-divisions from Eons Eras Period Epochs based on empirically derived observations of cross-cutting relationships, faunal successions and new advances in radiometric dating. To which eon do the oldest dated minerals on the Earth belong?

Hadean

Two atoms of a single element that differ in the number of neutrons are said to represent two distinct ____ of that element

isotopes

The figure at right shows the decay curve of a parent radioactive isotope. What is the half-life of this isotope?

8 million years

According to the Big Bang Theory, our universe is ______

expanding

If a star is being observed from Earth and its light has shifted towards the blue end of the electromagnetic spectrum, it would be:

moving toward the Earth

The production of new elements in stars via nuclear reaction is called _____

nucleosynthesis

Aside from Earth, the terrestrial planets are _________

Mars, Mercury, and Venus

The formation of the moon is thought to have occurred by:

simultaneously accretion of material during the initial formation of Earth

From left to right, correctly label each section of this slice of the Earth. Note that 1 starts at the surface of the Earth and 6 ends at the center of the Earth

crust, upper mantle, transition zone, lower mantle, liquid outer core, solid inner core

The shape of the Earth's magnetic field is approximately that of a ________

dipole, such as that produced by a bar magnet

The layers that make up the Earth's tectonic plates:

the crust and upper mantle

As compared to the asthenosphere, the lithosphere is ________

cooler and less able to flow

Compared to oceanic crust, continental crust is _____________

thicker

the boundary between the crust and mantle is marked by a seismic discontinuity called _______

The Moho

the two most abundant elements in Earth's crust and mantle are:

silicon and oxygen

the strength of chemical bonds affects the hardness of minerals: the stronger the bonding, the harder the material. which of the following bond types produces the hardest minerals?

covalent

which source of energy is MOST likely responsible for plate tectonic movements?

internal energy

how do magnetic anomalies on the ocean floor serve as evidence for seafloor spreading?

their symmetry on either side of mid-ocean ridges shows that new crust is created and then split apart

Regions of the seafloor with negative magnetic anomalies were formed during times when the Earth's magnetic field ______

had reversed polarity

Which of the following best describes the global distribution of earthquakes?

they occur in distinct zones

Deep-ocean trenches are found predominantly along the perimeter of the ____

Pacific Ocean

in a hotspot volcanic island chain, which of the following is true?

the ages of and distance between volcanoes can be used to calculate plate velocities

Transform boundaries are identified by which of the following?

shallow earthquakes, no volcanoes, and a large strike-slip fault

the age of the universe is approximately ________ years old, whereas the age of the Earth is _____ years old

the Earth contains a number of interacting systems, of which the three main systems of are the _____ system, the _________ system, and the _______ system

the elements that make up a star's composition throughout the majority of its life are _____ and ______. however, massive stars continue to fuse elements in their coarse all the way up to _____ just prior to their death when their increasing mass cause the star to collapse

the _____________ hypothesis is thought to accurately describe the formation of our solar system

the _________ and ___________ are layers of the earth that are dominated by convection, whereas the __________ and the __________ are dominated by conduction

the innermost layer of the Earth consists of what metallic alloy?

plate tectonics describe the motion of a mechanically strong layer known as the ______ that moves on top of the weak, connecting portion of the upper ______, known as the _______

the ________ is the name for the most abundant group of minerals, often called the "rock forming minerals"

at what type of plate boundary do subduction zones occur ?

give an example of a mountain range that formed by a continent-continent collision

the most recent supercontinent, which began to break up about 250 million years ago, is called ________

Test your knowledge on weathering, erosion, and sedimentary rocks with this quiz. Find out about different types of weathering, hydrolysis reactions, sedimentary rock classifications, sedimentary environments, and climates affecting chemical weathering.

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