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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
ocean ridges
B
valleys
C
trenches
D
plateaus
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 absorbed by Earth's liquid outer core
C
be totally reflected off the crust-mantle interface
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
deep wells that extend into the mantle and core
B
the behavior of seismic waves in Earth's interior
C
chemical changes in weathered metamorphic outcrops
D
rocks brought back from Earth's moon
4) Which of the following lists the layers of Earth in order of increasing density?
A
inner core, outer core, crust, mantle
B
crust, mantle, outer core, inner core
C
crust, mantle, inner core, outer core
D
inner core, outer core, mantle, crust
5) Theories about Earth's core are supported by meteorites composed of
A
oxygen and silicon
B
aluminum and iron
C
aluminum and oxygen
D
iron and nickel
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 waves are refracted within Earth
B
P-waves are blocked by liquid.
C
S-waves are blocked by liquid.
D
Seismic was are reflected within Earth.
7) b
A
B
B
D
C
C
D
A
8) Compared to the continental crust, the oceanic crust is
A
thinner
B
composed of a less dense type of rock
C
thicker
D
the same thickness
9) liquid layer
A
S-waves, but no P-waves
B
P-waves, but no S-waves
C
no seismic waves
D
both P- and S-waves
10) f
A
C
B
E
C
A
D
F
*select an answer for all questions
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