Front

What is the place within the Earth's crust where energy is released during an earthquake?

Back

Focus

Front

What are the blocks that make up the Earth's crust called?

Back

Plates

Front

What are the giant cracks in the Earth's crust known as?

Back

Faults

Front

How many earthquakes occur every year?

Back

Millions

Front

What natural disaster can occur as a result of an earthquake?

Back

Tsunamis

Front

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

Back

Epicenter

Front

What scale is used to measure the magnitude of earthquakes?

Back

Richter Scale

Front

What is the term for the shaking of the ground caused by an earthquake?

Back

Seismic Activity

Front

What is the process called when tectonic plates move and cause earthquakes?

Back

Plate Tectonics

Front

What are the two main types of seismic waves generated by earthquakes?

Back

P-waves and S-waves