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Chapter 8 & 9
Plate tectonics and earthquakes
10
Environmental Studies
9th Grade
03/07/2013

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Cards

Term
What causes an earthquake?
Definition
Earthquakes are caused by the vibration of Earth produced by the sudden release of energy.
Term
Describe the location of an epicenter and focus.
Definition
Term
What is the elastic Rebound hypothesis?
Definition
Elastic rebound hypothesis is the release of built up energy.
Term
Describe aftershock and foreshocks
Definition
Aftershocks are small quakes that come after a major earthquakes. Foreshocks are small quakes that come before major earthquake
Term
How are earthquakes mearsure
Definition
Historically scientist have used two different types of measurement to describe the size of an earthquake intensity and magnitude.
Term
Who came up with the idea of continental drift
Definition
Alfred Wegner
Term
What is pangaea
Definition
Super continent
Term
When did pangaea form
Definition
500 MY
Term
What kind of evidence is presented to verify the idea of continental drift
Definition
Term
What is plate tectonics
Definition
the uppermost mantle, along with overlying crust, behaves
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