Earthquakes!

Front

What is the most destructive type of seismic wave?

Back

Surface wave

Front

What instrument is used to measure the intensity and duration of earthquakes?

Back

Seismograph

Front

Which type of seismic wave is known as secondary waves?

Back

S-waves

Front

What is the fastest type of seismic wave?

Back

P-waves

Front

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

Back

Epicenter

Front

What are the two main types of seismic waves?

Back

Body waves and surface waves

Front

What is the difference between P-waves and S-waves?

Back

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

Front

What is the focus of an earthquake?

Back

The point within the Earth where the earthquake originates.

Front

What is the Richter scale used for?

Back

To measure the magnitude of an earthquake.

Front

What is a seismogram?

Back

A record produced by a seismograph that shows the motion of the ground during an earthquake.