Earthquakes & Earthquake waves

Front

What is a normal fault?

Back

A fault where the rock above the fault moves down relative to the rock below.

Front

What is a fault line?

Back

A fracture in the Earth's crust along which movement has occurred.

Front

What happens at a strike-slip fault?

Back

The tectonic plates move horizontally past each other.

Front

What type of stress pulls rocks apart?

Back

Tension, which is like stretching a rubber band.

Front

What is the epicenter of an earthquake?

Back

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

Front

What is the focus of an earthquake?

Back

The point underground where the earthquake originates.

Front

What are seismic waves?

Back

Waves of energy that travel through the Earth, generated by earthquakes.

Front

What is a reverse fault?

Back

A fault where the rock above the fault moves up relative to the rock below.

Front

What is shear stress?

Back

Stress that causes layers of rock to slide past each other.

Front

What is an earthquake?

Back

The shaking of the Earth's surface caused by the sudden release of energy in the Earth's crust.