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Dynamic Crust 2
Test Description: Questions on earthquakes, earth\'s layers, volcanoes, and continental drift.
Instructions: Answer all questions to get your test result.
1) These are formed when tectonic plates move away from each other.
A
trenches
B
valleys
C
plateaus
D
ocean ridges
2) S-waves from an earthquake that travel down toward Earth's center will
A
reach the far side of Earth faster than P-waves
B
be totally reflected off the crust-mantle interface
C
be absorbed by Earth's liquid outer core
D
be refracted (deflected) by Earth's magnetic field
3) Most inferences about the states of matter of Earth's mantle and core are based on
A
the behavior of seismic waves in Earth's interior
B
rocks brought back from Earth's moon
C
deep wells that extend into the mantle and core
D
chemical changes in weathered metamorphic outcrops
4) Which of the following lists the layers of Earth in order of increasing density?
A
inner core, outer core, mantle, crust
B
crust, mantle, outer core, inner core
C
inner core, outer core, crust, mantle
D
crust, mantle, inner core, outer core
5) Theories about Earth's core are supported by meteorites composed of
A
aluminum and iron
B
aluminum and oxygen
C
iron and nickel
D
oxygen and silicon
6) When a major earthquake occurs, there is a region of Earth's surface where no direct P- and S-waves can be detected. This is known as the shadow zone. What causes this shadow zon
A
Seismic was are reflected within Earth.
B
P-waves are blocked by liquid.
C
Seismic waves are refracted within Earth
D
S-waves are blocked by liquid.
7) b
A
D
B
B
C
C
D
A
8) Compared to the continental crust, the oceanic crust is
A
the same thickness
B
composed of a less dense type of rock
C
thinner
D
thicker
9) liquid layer
A
S-waves, but no P-waves
B
P-waves, but no S-waves
C
both P- and S-waves
D
no seismic waves
10) f
A
E
B
C
C
F
D
A
*select an answer for all questions
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