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Ch.13 Lesson 4 Earthquakes Q&A

Q & A Worksheet

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Country Flag United States of America

Date Shared: 14 April 2013

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What is an earthquake? An earthquake is a shaking of the earth's crust that occurs when energy is suddenly released. What releases energy and causes some earthquakes? An erupting volcano How do most earthquakes occur? When rocks break or move suddenly along a fault. Where do most earthquakes occur? Near plate boundaries What is a seismograph? Instrument that detects and records earthquake waves What is focus? Point inside the earth where rock first moves, starting an earthquake What is the epicenter? Point on the earth's surface directly over the focus of an earthquake What is the Richter scale? Scale used to measure the strength of an earthquake What is a Tsunami? Large sea wave caused by vibrations of the earth

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14 April 2013

srhereford Author Country Flag

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