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Earthquakes
Natural Disasters
9
Science
8th Grade
05/10/2011

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Cards

Term
What is an earthquake?
Definition
a shaking of the ground
Term
What causes earthquakes?
Definition
caused by an abrupt shifting of rock, called a fault
Term
How is the size of an earthquake indicated?
Definition
it is indicated by a number called the magnitude
Term
What is the hypocenter?
Definition
a place where the movement first occured in the fault
Term
What devastating event is one of the leading causes of death during an earthquake?
Definition
a collapsing of a building
Term
What are plates?
Definition
Plates are thick slabs of rock that make up the outermost 100 kilometers or so of the Earth.
Term
What are the four different types of faults?
Definition
There is the normal fault, the reverse fault, strike-slip fault, and dip-slip fault.
Term
What happens in a strike-slip fault?
Definition
the plates meet evenly and slide against each other horizontally
Term
Where do 95% of all earthquakes occur?
Definition
95% of all earthquakes occur at active plate boundaries (places such as Alaska, California, Japan, etc.)
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