Earthquakes and Volcanoes

Front

What is the lag time if the p-wave arrives at 6:00:00 PM and the s-wave arrives at 6:02:45 PM?

Back

2 minutes and 45 seconds

Front

Where can volcanoes be found?

Back

Volcanoes can be found on land, under water, on islands, and in all of the above locations.

Front

What can earthquakes under the water cause?

Back

Tsunamis.

Front

What is magma called when it reaches the surface of Earth?

Back

Lava.

Front

What is a small volcano with steep sides called?

Back

Cinder cone.

Front

What are the two main types of seismic waves?

Back

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

Front

What is the difference between magma and lava?

Back

Magma is molten rock beneath the Earth's surface, while lava is magma that has reached the surface.

Front

What is the Richter scale used for?

Back

To measure the magnitude of earthquakes.

Front

What type of volcano is characterized by broad, gentle slopes?

Back

Shield volcano.

Front

What is a volcanic eruption?

Back

The release of magma, gas, and ash from a volcano.