Earthquakes

Front

What is the epicenter of an earthquake?

Back

The point on the surface directly above the focus of the earthquake.

Front

What type of wave is the first to arrive after an earthquake occurs?

Back

P Wave.

Front

What instrument detects and records waves produced by earthquakes?

Back

Seismograph.

Front

Which seismic wave does a seismograph detect first?

Back

P Wave.

Front

What is NOT a cause of an earthquake?

Back

Lightning Strikes.

Front

What is the focus of an earthquake?

Back

The point within the Earth where an earthquake originates.

Front

What are tectonic plates?

Back

Large sections of the Earth's crust that move and interact with each other.

Front

What is a fault in geology?

Back

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

Front

What are seismic waves?

Back

Waves of energy that travel through the Earth, produced by earthquakes.

Front

What is a seismogram?

Back

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