Earthquakes

True or False: People have died because of earthquakes.

• A. True
• B. False

A place where rocks slide past each other is called a ____.

• A. earthquake
• B. barrier
• C. fault line
• D. tectonic plate

Earth has about ____ tectonic plates all moving in different directions.

• A. 5
• B. 10
• C. 20
• D. 50

When the crust breaks, ____ are released and felt as earthquakes.

• A. tidal waves
• B. waves of energy
• C. strong winds
• D. giant storms

True or False: Earthquakes hardly ever happen.

• A. True
• B. False

Most earthquakes last less than a

• A. day
• B. hour
• C. minute
• D. second

Which US state has the most earthquakes?

• A. Florida
• B. North Carolina
• C. New York
• D. California

True or False: Earthquakes are impossible on the east coast.

• A. True
• B. False

Scientists use an instrument called a____ to measure earthquakes.

• A. thermometer
• B. seismograph
• C. barometer
• D. telegraph

Magnitude is another word for

• A. strength
• B. size
• C. duration
• D. time