Multiple Choice for Earthquakes

Front

the amount of ground displacement in an earthquake is called the

Back

slip

Front

The point where movement occurred which triggered the earthquake is called the

Back

focus

Front

Which of the following sequences correctly lists the different arrivals from first to last: p waves... s waves... surface waves, surface waves... p waves... s waves, p waves... surface waves... s waves, s waves... p waves... surface waves?

Back

p waves... s waves... surface waves

Front

How do rock particles move during the passage of a P wave through the rock?

Back

back and forth parallel to the direction of wave travel

Front

How many seismograph stations are needed to locate the epicenter of an earthquake?

Back

3

Front

Earthquakes can occur with ______ faulting

Back

all of these

Front

Approximately what percentage of earthquakes occur at plate boundaries?

Back

90%

Front

If only density increases with increasing depth within the earth, the velocity of a P wave should ______

Back

decrease

Front

If a P wave were to go from a solid to a liquid - what would happen to its velocity?

Back

decrease

Front

If an S wave were to go from solid to a liquid - what would happen to its velocity?

Back

decrease to 0.0