1. How do rock particles move during the passage of a P wave through the rock? A. back and forth parallel to the direction of the wave travel B. back and forth perpendicular to the direction of wave travel C. in a rolling motion d. the particles do not move.
2. How do rock particles move during the passage of an S wave through the rock? A. back and forth parallel to the direction of wave travel B. perpendicular to the direction of wave travel C. in a rolling elliptical motion D. in a rolling circular motion
3. Which of the following can trigger a tsunami? A. the eruption of an oceanic volcano B. undersea earthquake C. undersea landslide D. all of the above
4. Which statement best explains why the P-wave of an earthquake arrives at a seismic station before the S-wave? A. The S-wave originates from the earthquake focus. B. The S-wave decreases in velocity as it passes through a liquid. C. The P-wave has a greater velocity than the S-wave D. The P-wave originates from the earthquake epicenter
. 5. An abrupt change in the speed of seismic waves is an indication that the __. A. shear wave has overtaken the compressional wave B. seismic waves are collidingC. waves are passing through the material of the density

D. waves are going into a material with different properties

6. Which seismic waves travel through the interior part of the

earth?

A. body waves C. inner waves

B. surface wave D. deep wave

7. Rayleigh waves move along the surface of the Earth forming

a wave

that is much like:

A. a skier moving down a mountain hill

B. a car travelling through the sand dunes

C. an ocean wave

D. a whale gliding along the ocean’s surface

8. What layer of the Earth do S-waves reflect off, rather than

traveling through?

A. upper mantle C. lower mantle

B. outer core D. inner core

9. Why can’t S-waves travel through the Earth?

A. They aren’t strong enough.

B. They are allergic to crust.

C. They can’t go through liquid magma.

D. They only travel up.

10. What is the correct order (starting from the surface) of

Earth’s

layers?

A. crust, outer core, inner core, mantle

B. crust, mantle, outer core, inner core

C. mantle, outer core, inner core, crust

D. outer core, inner core, crust, mantl​