Unit 4a Test Grade Recovery

Front

What is a volcano?

Back

An opening in the earth through which lava, rock, ashes, and gases are forced out.

Front

What is the epicenter of an earthquake?

Back

The place on the surface of the Earth directly above where the earthquake originates underground.

Front

What evidence did Wegener use to support his theory of continental drift?

Back

Continents and fossils fitting together like puzzle pieces, glacier scars, temperature evidence, and aligned mountain ranges and coal deposits.

Front

What type of earthquake would cause the most severe damage?

Back

An earthquake with a shallow focus and a magnitude of 4.5.

Front

What causes convection currents in the mantle?

Back

The circulation of magma in the mantle.

Front

Define 'focus' in the context of earthquakes.

Back

The point underground where the earthquake originates.

Front

What is a seismograph?

Back

An instrument used to detect and record the intensity and duration of seismic waves.

Front

What is the Richter scale?

Back

A scale used to measure the magnitude of earthquakes.

Front

What are glacier scars?

Back

Marks left on the Earth's surface by the movement of glaciers, indicating past glacial activity.

Front

How do mountain ranges provide evidence for continental drift?

Back

Mountain ranges that line up across continents suggest that those continents were once connected.