1. What kind of volcanic eruption occurs if the lava just flows out of the crater and gaps along the sides of the volcano? A. Explosive eruption B. Nonexplosive eruption C. Vulcanian eruption D. None of the above
2. An instrument used to measure the motion of the ground during an earthquake is called _____. A. Richter scale B. Compass C. Seismograph D. Satellites
3. What occurs when the ground shakes and man-made structures are damaged resulting from an earthquake? A. landslide B. liquefaction C. fissure D. building destruction
4. At what magnitude can an earthquake cause a hanging object to swing? A. Magnitude 2 B. Magnitude 4 C. Magnitude 3 D. Magnitude 5
5. The high temperature and pressure resulting in the melting of rocks during a volcanic eruption produces _____. A. gases B. magma C. ashes D. lava
6. The release of magma from the crater is called _____. A. magma B. lava C. rocks D. volcanic eruption
7. Before an earthquake, all members of the household must practice drop, cover, and _____. A. sit B. squat C. roll D. hold
8. Which of the following events causes an earthquake? A. changes in weather B. movement of crustal plates C. too much heat from the sun D. mixture of crustal plates