Tell Me Why? We Have Earthquakes by Linda Crotta Brennan

Author:Linda Crotta Brennan
Language: eng
Format: epub
Publisher: Cherry Lake Publishing

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suddenly shifts,” he said. “The energy

ripples out in waves. The waves shake the

ground. This is an earthquake.”

Scientists measure earthquakes and aftershocks using the Richter scale. Most earthquakes are less than 3 on the

Richter scale. We can hardly feel them.

Earthquakes larger than 6 are strong.

They can cause a lot of damage. Buildings

can fall down. Roads can be damaged.

People can be hurt or killed.

Ask Questions!

Ask a teacher

or librarian to

help you find

out when the

Richter scale

was invented.

Scientists use this seismograph to measure earthquakes.

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