Chapter 8 Review - Earthquakes

Front

A fault is

Back

a fracture in the Earth where movement has occurred.

Front

An earthquake’s epicenter is

Back

the place on the surface directly above the focus.

Front

When an earthquake occurs, energy radiates in all directions from its source, which is called the

Back

focus

Front

Earthquakes are usually associated with: violent weather, large cities, faults, the east coast of North America

Back

faults

Front

The hypothesis that explains the release of energy during an earthquake is called the

Back

elastic rebound hypothesis.

Front

Major earthquakes are sometimes preceded by smaller earthquakes called

Back

foreshocks

Front

Which seismic waves travel most rapidly? Options: P waves, surface waves, S waves, tsunamis

Back

P waves

Front

Overall, which seismic waves are the most destructive? Options: P waves, compression waves, S waves, surface waves

Back

surface waves

Front

What is the minimum number of seismic stations needed to determine the location of an earthquake’s epicenter?

Back

3

Front

What is the distance between the seismic station and an earthquake epicenter, if the first S wave arrives 4.0 minutes after the first P wave?

Back

3000 kilometers