Earthquakes!

Front

What is a seismograph?

Back

An instrument that detects and measures earthquakes.

Front

Which type of seismic wave travels the fastest?

Back

Primary Wave (P wave) is the fastest seismic wave.

Front

What are S waves?

Back

Secondary waves that arrive after P waves during an earthquake.

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 are surface waves?

Back

Seismic waves that travel along the Earth's surface and cause the most damage.

Front

What is the focus of an earthquake?

Back

The point within the Earth where an earthquake originates.

Front

What is a seismogram?

Back

A record produced by a seismograph that shows the intensity and duration of seismic waves.

Front

What is the difference between P waves and S waves?

Back

P waves are compressional waves that travel through solids and liquids, while S waves are shear waves that only travel through solids.

Front

What is the Richter scale?

Back

A scale used to measure the magnitude of an earthquake.

Front

What is a seismic map?

Back

A map that shows the locations of earthquakes and their magnitudes.