Earthquakes

Front

The composition of Earth's interior affects: how long an earthquake will last, the speed and direction of seismic waves, the location of an earthquake's focus, the strength of an earthquake.

Back

the speed and direction of seismic waves

Front

What are the fastest body waves? Options: P waves, T waves, S waves, Q waves

Back

P waves

Front

Earthquakes generally occur at plate boundaries, where

Back

stress on rocks is greatest

Front

At what location does the first motion of an earthquake occur? Options: the focus, the seismic gap, the mantle, the epicenter

Back

the focus

Front

A foreshock is

Back

a small earthquake

Front

Why do earthquakes usually occur at plate boundaries?

Back

Rock in environments near tectonic plate boundaries experience great stress.

Front

What is the epicenter of an earthquake?

Back

the point on Earth's surface directly above the earthquake's focus

Front

This area is responsible for 90% of all earthquakes in the world and contains numerous faults:

Back

The Ring of Fire

Front

This famous transform fault is located in the western United States creates significant earthquake activity for California.

Back

San Andreas

Front

This fault is found in the Mid-West and directly affects Missouri, Illinois, Indiana, Kentucky, Arkansas, Tennessee and Mississippi:

Back

New Madrid Fault