What is an earthquake?
Earthquakes!

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Science, Geography
•
6th - 8th Grade
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Easy
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1.
FLASHCARD QUESTION
Front
Back
An earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves.
2.
FLASHCARD QUESTION
Front
What is the epicenter of an earthquake?
Back
The epicenter is the point on the Earth's surface directly above the location where an earthquake originates.
3.
FLASHCARD QUESTION
Front
What are seismic waves?
Back
Seismic waves are waves of energy that travel through the Earth and are caused by the movement of tectonic plates.
4.
FLASHCARD QUESTION
Front
What are P-waves?
Back
P-waves, or primary waves, are the fastest seismic waves and can travel through solids, liquids, and gases.
5.
FLASHCARD QUESTION
Front
What are S-waves?
Back
S-waves, or secondary waves, are slower than P-waves and can only travel through solids.
6.
FLASHCARD QUESTION
Front
What are surface waves?
Back
Surface waves are seismic waves that travel along the Earth's surface and are responsible for most of the damage during an earthquake.
7.
FLASHCARD QUESTION
Front
What is the magnitude of an earthquake?
Back
The magnitude is a measure of the amount of energy released during an earthquake, often measured on the Richter scale.
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