Chapter 3 Quiz
The Origin and Structure of Earth
1.
The age of the earth is approximately
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46 billion years
460 million years
4.6 billion years
4.6 million years
2.
Select the correct order of the four major layers of the Earth, from the
innermost to outermost.
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core, aesthenosphere, mantle, moho
core, crust, lithosphere, mantle
mantle, crust, mesosphere, aesthenosphere
inner core, outer core, mantle, crust
3.
The inner core is thought to consist primarily of
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molten rock
iron and nickel
lead
silicates
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4.
Which of the following statements about the study of the interior of the Earth
is incorrect?
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S-waves cannot pass through the liquid outer core.
The Earth's interior has a very uniform density.
Data from seismic waves can be used to determine the thickness and density of Earth's
layers
The velocity of seismic waves varies with the density of the material.
5.
The inner core and mantle are the fluid layers of the earth's interior
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True
False
6.
The principle explaining the variable buoyancy of crustal material is
7.
Compared to continental crust, oceanic crust is:
Check all that apply.
older
composed mostly of basalts
less dense
thicker
composed mostly of granites
more dense
younger
thinner
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4 points
8.
The boundary between the crust and the mantle is known as the
9.
The lithosphere consists of the:
1 point
2 points
Check all that apply.
fluid lower mantle
crust
outer core
solid upper mantle
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