8th Sci Earthquakes

Front

What are surface waves?

Back

The last waves to reach a seismic station; they travel on top of the ground.

Front

Where are faults typically found?

Back

At plate boundaries.

Front

Can earthquakes be predicted?

Back

No, reliable earthquake forecasting is probably still years away.

Front

What are divergent boundaries?

Back

The margin between two tectonic plates that are moving away from each other, found at rift valleys and where sea-floor spreading occurs.

Front

True or False: Rocks show strain by stretching, compressing, bending, or breaking.

Back

True.

Front

What is a fault?

Back

A fracture or zone of fractures between two blocks of rock.

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.

Front

What are body waves?

Back

Waves that travel through the Earth's interior.

Front

What are the two types of body waves?

Back

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