Chapter 8 Earthquakes and Earth Structures Review

Front

What is the point on Earth’s surface directly above the initial rupture point (focus) of an earthquake?

Back

Epicenter

Front

What instrument records seismic waves?

Back

Seismograph

Front

What is the layer of the Earth labeled as number 30?

Back

Outer Core

Front

What scale expresses the strength of an earthquake based on its destructive power and effects on buildings and people?

Back

Mercalli scale

Front

True or False: Earthquakes are caused by movements in Earth’s crust.

Back

True

Front

What is the term for the underground point where an earthquake originates?

Back

Focus

Front

What is the name of the scale that measures the energy released by an earthquake?

Back

Richter scale

Front

What type of seismic wave travels the fastest?

Back

Primary waves (P-waves)

Front

What is the term for the shaking of the ground caused by seismic waves?

Back

Ground shaking

Front

What is the name of the boundary where two tectonic plates meet?

Back

Plate boundary