Earthquakes!

Front

What is a seismograph?

Back

A machine used to record the vibrations caused by earthquakes.

Front

What does the 'S' in 'S-waves' stand for?

Back

Secondary, indicating the type of seismic wave.

Front

What are Surface Waves?

Back

The seismic waves that travel along the Earth's surface and are the most destructive.

Front

What is the Ring of Fire?

Back

A path along plate boundaries where volcanoes and earthquakes are common.

Front

What causes earthquakes?

Back

Tectonic plate movement.

Front

What are P Waves?

Back

Primary waves that are the first to arrive during an earthquake.

Front

What is tectonic plate movement?

Back

The shifting of the Earth's plates that can cause earthquakes.

Front

What are aftershocks?

Back

Smaller earthquakes that occur after the main shock of a larger earthquake.

Front

What is the focus of an earthquake?

Back

The point within the Earth where an earthquake originates.

Front

What is the epicenter of an earthquake?

Back

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