Earthquakes

Fill in the blank: An __________ is a natural disaster that happens when the ground moves because rocks deep under Earth's surface move.

• volcano

• earthquake

• cracks

• tectonic plate

Fill in the blank: Most earthquakes start in the ______.

• the crust

• the mantle

• the core

• the atmosphere

The place in the crust where earthquakes start is the ​ (a)  

• lithosphere
• asthenosphere
• core

Fill in the blank: ______ waves are the vibrations that spread out from an earthquake.

• seismic

• oceanic

• sound

• light

Fill in the blank: Seismic waves are the __________ that spread out from an earthquake.

• seismic

• shakes

• sound

• vibrations

Fill in the blank: These waves carry the earthquake’s energy through the ______, moving deep inside Earth and across its surface.

• ground

• air

• mantle

• core

Geologists can determine earthquake risk by locating where faults are ​ (a)   and where past earthquakes have ​ (b)   .

• inactive
• not happened
• active
• happened

In the United States, where is the earthquake risk highest? Three States.

• California

• Washington

• Alaska

• New York

In California, the Pacific plate and North American plate meet along the ______ fault.

• San Andreas

• Rio Grande

• Rocky Mountain

• Calaveras

In Washington and Alaska, earthquakes result from the __________ of the Pacific plate.