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Name: ________________________________________________________ Date: _______ Period: ______
Earthquakes Ch. 8-1
What are Earthquakes?
1. Seismology is _______________________________________________________________________
WHERE DO EARTHQUAKES OCCUR?
2. Where do most earthquakes take place? ___________________________________________________
3. When tectonic plates move and slip past each other, they cause ___________________in Earth’s crust.
4. Why do earthquakes occur along faults?
___________________________________________________________________________________
___________________________________________________________________________________
WHAT CAUSES EARTHQUAKES?
Match the correct definition with the correct term. Write the letter in the space provided.
_____ 5. rock deformation that is like a stretched rubber band and leads to
earthquakes
a. deformation
_____ 6. change in the shape of rocks in response to stress
b. plastic deformation
_____ 7. sudden return of elastically deformed rock to its undeformed shape
c. elastic deformation
_____ 8. rock deformation that is like a piece of molded clay and does not
lead to earthquakes
d. elastic rebound
9. What occurs when more pressure is applied to a rock than it can withstand? ______________________
10. During elastic rebound, energy is released that travels as seismic waves. What do the seismic waves
cause? _____________________________________________________________________________
FAULTS AT TECTONIC PLATE BOUNDARIES
Match the correct definition with the correct term. Write the letter in the space provided.
_____ 11. occurs where two plates slip past each other
a. divergent motion
_____ 12. occurs where two plates push together
b. convergent motion
_____ 13. occurs where two plates pull away from each other
c. transform motion
HOW DO EARTHQUAKE WAVES TRAVEL?
_____ 14. Seismic waves that travel along Earth’s surface are
a. surface waves.
b. body waves.
c. secondary waves.
_____ 15. Which of the following is the fastest type of seismic wave?
a. surface waves
b. S waves
c. P waves
_____ 16. An S wave is unable to travel through
a. solids.
b. liquid.
c. rock.
17. What does the speed of a seismic wave depend on? __________________________________________
Match the correct definition with the correct term. Write the letter in the space provided.
_____ 18. wave of energy that travels through Earth, away from an earthquake in all
directions
_____ 19. seismic wave that causes particles of rock to move in a back-and-forth
direction
_____ 20. seismic wave that causes particles of rock to move in a side-to-side
direction
a. S wave
b. seismic wave
c. P wave