Forces Earth's Crust and Measuring Earthquakes

The shaking and trembling that results from rock beneath Earth's surface is called a/n ___

• P waves

• Richter scale

• earthquake

• volcano

Tags

NGSS.MS-ESS3-2

The epicenter of an earthquake is ___ the focus.

• above

• below

P waves can become ___ waves when they reach Earth's surface.

• S

• surface

Tags

NGSS.MS-PS4-2

To locate the epicenter of an earthquake, geologists need data from ___ or more seismographs.

• 1

• 2

• 3

The ___ of an earthquake is the point where rock under stress begins to break or move.

• focus

• epicenter

• energy

__ waves move the fastest of all the seismic waves.

• P

• S

• Surface

__ is a force that acts on rocks to change its shape or volume.

• Tension

• Stress

• Compression

When two plates move away from each other, ___ faults are created.

• normal

• strike-slip

• reverse

Tags

NGSS.MS-ESS2-3

A/n ___ is a fold in rock that bends upward into an arch.

• syncline

• anticline

• normal

The stress force that pulls on the crust and thins rock in the middle is ___.

• shearing

• compression

• tension