Download Vocab-Chapter 8

Earth Science--Vocab Terms
Name:______________________________
Chapter 8-Earthquakes
Date:____________________Period:_____
Use the following list of vocabulary terms to complete each statement.
Shadow zone
Seismology
Moho
Fault
Seismic gap
Deformation
Gap hypothesis
P-waves
Elastic rebound
Focus
Seismic waves
S-waves
Epicenter
Seismograph
Seismogram
____________________________ 1. The study of earthquakes.
____________________________ 2. An area on the Earth’s surface where no direct seismic waves from a particular earthquake
can be detected.
____________________________ 3. The point inside the Earth where an earthquake begins.
____________________________ 4. The change in the shape of rock in response to stress.
____________________________ 5. An instrument located at or near the surface of the Earth that records seismic waves.
____________________________ 6. The second-fastest type of seismic wave; cannot travel through materials that are completely
liquid; also known as shear waves and secondary waves.
____________________________ 7. States that sections of active faults that have had relatively few earthquakes are likely to be
the sites of strong earthquakes in the future.
____________________________ 8. A place within the Earth where the speed of seismic waves increases sharply; marks the
boundary between the Earth’s crust and mantle.
____________________________ 9. A break in the Earth’s crust along which blocks of the crust slide relative to one another due
to tectonic forces.
____________________________10. The fastest type of seismic wave; can travel through solids, liquids, and gases; also known
as pressure waves and primary waves.
____________________________11. A tracing of earthquake motion created by a seismograph.
____________________________12. The point on the Earth’s surface directly above an earthquake’s starting point.
____________________________13. The sudden return of elastically deformed rock to its undeformed shape.
____________________________14. Waves of energy that travel through the Earth.
____________________________15. An area along a fault where relatively few earthquakes have occurred.
Define each of the following terms. They are NOT in the glossary. You will need to refer to Chapter 8 in your book.
16. Plastic deformation-_____________________________________________________________________________________
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17. Elastic deformation-_____________________________________________________________________________________
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18. Seismologists-_________________________________________________________________________________________
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19. Richter Scale-__________________________________________________________________________________________
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20. Body waves-___________________________________________________________________________________________
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