a fracture, or break in the Earth's lithosphere, along which blocks of rock move past each other.

These waves are the fastest seismic waves and are the first to reach any particular location after an earthquake.

These waves are the second seismic waves to arrive at any particular location after an earthquake.

These waves move along the Earth and cause the largest ground movements and the most damage.

In an earthquake, the point underground where the rocks first begin to move.

The point on Earth's surface directly above the focus of an earthquake.

A stress force going in opposite directions.

A stress force that squeezes until it breaks.

A stress force that pulls apart making it get thin in the middle

In this type of fault, rocks on either side slip past each other sideways with little up or down motion.

In this type of fault, the foot wall pulls apart while the hanging wall falls down.

In this type of fault, foot wall compresses while the hanging wall moves up.

Vibrations that travel through Earth carrying energy released during an earthquake.

Measurement of earthquakes strength based on seismic waves and movement along faults.

This records the ground movements caused by seismic waves.

A large area of flat land elevated high above sea level.

A shaking of the ground caused by the sudden movement of large blocks of rocks along a fault.