Earth Science Chapter 19 Study Guide True/False

____ 1. The amount of damage done to structures as a result of an earthquake is the earthquake’s intensity.

____ 2. A seismometer is designed so that its frame vibrates with the movement of the ground.

____ 3. Earth’s lower mantle is probably composed of oxides containing iron, silicon, and magnesium.

____ 4. P-waves are refracted, or bent, by Earth’s outer core.

____ 5. The fact that a significant earthquake has not occurred within a seismic gap indicates that an earthquake is more likely to occur in the near future.

____ 6. Seismic belts are relatively narrow and tend to follow tectonic plate boundaries.

____ 7. From studying seismic waves, scientists have determined that the lithosphere, which includes the crust and top of the upper mantle, is primarily igneous in composition.

____ 8. Most rocks that exist in Earth’s crust are brittle but become ductile at great depths where temperatures are higher, warmer.

____ 9. If three seismic stations receive data from an earthquake, the quake’s location can be computed if P-waves, S-waves, and surface waves have been received.

____ 10. On a seismometer, the suspended mass tends to stay at rest during an earthquake because of inertia.

Other

11. Vocabulary

modified Mercalli scale, tsunami , magnitude, strain, stress, seismic gap, fault, surface wave, P-wave , S-wave, strick slip. fault plane, normal fault
Earth Science Chapter 19 Study Guide

Answer Section

MODIFIED TRUE/FALSE

1. ANS: F, intensity

PTS: 1 DIF: B OBJ: 19-3a

2. ANS: T PTS: 1 DIF: B

OBJ: 19-2a

3. ANS: T PTS: 1 DIF: B

OBJ: 19-2b

4. ANS: F, P-waves

PTS: 1 DIF: B OBJ: 19-1c

5. ANS: T PTS: 1 DIF: B

OBJ: 19-4c

6. ANS: T PTS: 1 DIF: B

OBJ: 19-3a

7. ANS: F, lithosphere

PTS: 1 DIF: B OBJ: 19-2b

8. ANS: F, higher, warmer

PTS: 1 DIF: B OBJ: 19-1a

9. ANS: F, three

PTS: 1 DIF: B OBJ: 19-3b

10. ANS: T PTS: 1 DIF: B

OBJ: 19-2a

OTHER

11. ANS: