Chapter 1
The moving puzzle of tectonic plates
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Chapter 2
Inside the fiery chambers of volcanoes
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Chapter 3
When the earth shakes and rolls
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Chapter 4
Living with a restless planet
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YOUR GOAL
Master of Volcanoes and earthquakes
Ch 3 · When the earth shakes and rolls
teacher Earthquakes
The world beneath you, always in a spin, As tectonic plates shift from deep within.
Fun Fact
Fast waves: Primary seismic waves travel through Earth's crust at speeds of up to 8 kilometers per second, faster than a speeding bullet.
Glossary
earthquake (noun)
A sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action. San Francisco suffered a devastating 1906 earthquake that registered 8.3 on the Richter scale.
A sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action. San Francisco suffered a devastating 1906 earthquake that registered 8.3 on the Richter scale.
Quiz
What temporary process turns solid sandy soil into a liquid-like mush during intense shaking?
Quiz
What scale is modernly used by scientists to measure the total energy of an earthquake?