Earthquakes

Front

What are the two types of seismic waves used to find the epicenter of an earthquake?

Back

Primary and Secondary waves.

Front

What is the point on the Earth's surface right above the focus of an earthquake called?

Back

Epicenter.

Front

What type of fault is caused by shearing stress?

Back

Strike-slip fault.

Front

What instrument is used to record and measure seismic waves?

Back

Seismograph.

Front

What type of fault is caused by tension in rock?

Back

Normal fault.

Front

What are seismic waves?

Back

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

Front

What is the focus of an earthquake?

Back

The point within the Earth where an earthquake originates.

Front

What is the difference between Primary and Secondary waves?

Back

Primary waves are compressional waves that travel faster, while Secondary waves are shear waves that travel slower.

Front

What is a fault in geological terms?

Back

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

Front

What is the magnitude of an earthquake?

Back

A measure of the energy released during an earthquake.