Earthquakes

Front

What is the point below the surface of the Earth where the rock breaks and causes an earthquake?

Back

Focus

Front

How many seismograph stations are needed to pinpoint an epicenter?

Back

3

Front

What type of seismic wave is the slowest, but causes the most damage?

Back

Surface waves

Front

What type of fault does compression cause?

Back

Reverse fault

Front

Sometimes this feature can be found within a plate instead of at a plate boundary.

Back

Fault

Front

What is the point on the Earth's surface directly above the focus of an earthquake called?

Back

Epicenter

Front

What instrument is used to measure seismic waves?

Back

Seismograph

Front

What are the two main types of seismic waves?

Back

P waves and S waves

Front

What type of fault occurs when two blocks of the Earth's crust slide past each other horizontally?

Back

Strike-slip fault

Front

What is the scale used to measure the magnitude of an earthquake?

Back

Richter scale