more about earthquakes

Front

What scale is used to measure the strength of an earthquake?

Back

Richter magnitude

Front

What is the point underground where the rock first begins to move during an earthquake?

Back

Focus or hypocenter

Front

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

Back

Epicenter

Front

How much stronger is a magnitude 8 earthquake compared to a magnitude 6 earthquake on the Richter Scale?

Back

100 times bigger

Front

What instrument is used to record the motion of the ground during an earthquake?

Back

Seismograph

Front

What is the term for the shaking of the Earth's surface caused by an earthquake?

Back

Ground shaking

Front

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

Back

P-waves (primary waves) and S-waves (secondary waves)

Front

What is the difference between the Richter scale and the Moment Magnitude scale?

Back

The Moment Magnitude scale provides a more accurate measure of larger earthquakes.

Front

What is liquefaction in the context of earthquakes?

Back

A phenomenon where saturated soil loses strength and behaves like a liquid during shaking.

Front

What is an aftershock?

Back

A smaller earthquake that occurs after a larger earthquake in the same area.