Understanding Earthquakes: A Quiz

What caused the shaking of San Francisco on April 18, 1906?

• An earthquake

• A tornado

• A thunderstorm

• A tsunami

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What is the main cause of earthquakes?

• Volcanic eruptions

• Strong winds

• Masses of rock shifting below the earth's surface

• Heavy rainfall

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What device do scientists use to record seismic waves?

• Compass

• Seismograph

• Thermometer

• Barometer

How much more energy does an earthquake release to measure one number higher on the Richter scale?

• About 40 times as much

• About 30 times as much

• About 20 times as much

• About 10 times as much

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NGSS.MS-PS3-5

Approximately how many earthquakes are felt by people each year?

• About 10,000

• About 50,000

• About 200,000

• About 100,000

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What was the magnitude of the greatest recorded earthquake ever to hit North America?

• 8.5

• 9.0

• 9.2

• 9.5

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What year did the greatest recorded earthquake hit Alaska?

• 1974

• 1964

• 1984

• 1954

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NGSS.MS-ESS3-2

What are engineers focusing on to deal with earthquakes?

• Stopping earthquakes from happening

• Moving cities to safer locations

• Creating better buildings and structures

• Predicting earthquakes more accurately

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NGSS.MS-ESS3-2

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