All About Earthquakes

Stress that pushes a mass of rock in two opposite directions is called ___.

• shearing

• tension

• compression

• deformation

Which of the following can cause damage days or months after a large earthquake?

• the arrival of surface waves

• convection

• a tsunami

• an aftershock

Tags

NGSS.MS-ESS3-2

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

• hanging wall

• reverse fault

• footwall

• anticline

In a strike-slip fault, the rocks on either side of the fault slip past each other sideways with little ___.

• noise

• shaking

• up-or-down motion

• movement

Which type of stress force produces reverse faults?

• shearing

• tension

• compression

• deformation

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

• syncline

• footwall

• epicenter

• focus

Tags

NGSS.MS-ESS3-2

The type of seismic waves that arrive at the surface first and move by compressing and expanding the ground like an accordion are called ___.

• S waves

• P waves

• surface waves

• Mercalli waves

Tags

NGSS.MS-PS4-2

The rating system that estimates the total energy released by an earthquake is called the ___.

• Richter Scale

• Moment Magnitude Scale

• Mechanical Seismograph Scale

• Mercalli Scale

A force that acts on rock to change its shape or volume is called ___.

• an aftershock

• friction

• convection

• stress

S waves are also known as ___ waves.

• primary

• secondary

• surface

• focus