Science - Earthquakes

Because stress is a force, it

• takes energy out of rock

• adds volume to rock

• adds energy to rock

________ is stress that pushes a rock in opposite directions

• shearing

• tension

• compression

Compression is stress that ....

• pushes rock in opposite directions

• pulls on the crust, stretching rock

• squeezes rock until it folds or breaks

In a normal fault, the part of the fault that lies below the other part is called the ___________.

• reverse fault

• hanging wall

• footwall

____________ pulls on the crust, stretching rock so that it becomes thinner.

• Tension

• Shearing

• Compression

The land between two normal faults moves upward to form a ____________.

• fold

• syncline

• fault-block mountain

The point beneath Earth's surface where rock breaks under stress and triggers an earthquake is called the

• footwall

• focus

• epicenter

Tags

NGSS.MS-ESS3-2

The epicenter of an earthquake is

• The point below the surface where rock begins to break and the first motion occurs

• The seismic station closest to the earthquake

• The point on the surface directly above the focus

Tags

NGSS.MS-ESS3-2

A fold in rock that bends upward into an arch is called a(n)

• anticline

• syncline

• footwall

____________ waves move slower than the others, but produce the most severe ground movements.

• P

• S

• Surface