1. What causes an earthquake?
A. forces above the earth
B. tremendous movement of the crust
C. intense heat on the surface of the earth
D. intense movement of liquid materials underneath
2. What is the Pacific Ring of Fire? It is an area circling the Pacific Ocean ________.
A. without crustal plates
B. where crustal plates are hard
C. where earthquake and volcanic activities occur
D. all of the above
3. At what magnitude can an earthquake cause displacement of buildings and cracks on the
earth’s surface?
A. magnitude 4 B. magnitude 5 C. magnitude 6 D. magnitude 7
4. Which of these describes an intensity of earthquake?
A. the destructive effects on the ground based on site
B. the energy released based on wave measurement
C. the distance traveled as tremors occur
D. frequency of the tremor’s occurrence
5. Which is used to measure magnitude of an earthquake?
A. Mercalli Scale B. Richter Scale C. seismograph D. tilt meter
6. Where does an earthquake originate?
A. epicenter B. focus C. centerfold D. all of the above
7. Why do great earthquakes occur? They occur because of ______.
A. shifting crustal plates C. waves coming from the ocean
B. the flowing steam D. weak typhoons that hit certain areas
8. When does a tsunami occur? When an earthquake __________.
A. is weak C. occurs on land
B. is strong D. occurs on the ocean floor
9. Engineers are designing a 10-story building in an area where seismic activity has been
declared. They are planning to make sure that the building can withstand an earthquake.
Which would be the most effective procedure for these? Apply simulated earthquake
forces __________________.
A. to a scale model of the building
B. during the construction of the building
C. to the entire building once it has been built
D. that were used on other buildings built in the same area
10. Which of the following describes a landslide?
A. loose rocks falling over a mountain C. some parts of the ground open up
B. giant waves in the ocean D. both a and b

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