Download Earthquakes

Earthquakes
Evan D.
Earthquakes and Indiana
► Indiana
is at a high risk of earthquakes.
Recent Earthquakes Elsewhere
► The
most recent earthquakes
have occurred in Alaska especially the Fox Islands.
► California is also a high risk
zone as are the Virgin Islands.
► The South Pacific Ocean is
another area at high risk for
earthquakes.
Tectonic Plates
► Areas
around tectonic plate boundaries are
at high risk for earthquakes. Even more so if
the area is in the ring of fire. Most
earthquakes occur near that area.
Determining Earthquakes
► There
is a way to
determine what parts of
the world are at higher
risk then others:
 First you look at where the
plate boundaries are.
 Then you find out what
kind of boundary it is.
 Then you add up the
information. That will tell
you the answer.
Earthquakes and Volcanoes (oh, my!)
There is some relationship between earthquakes and
volcanoes.
► They are both caused by the tectonic plates shifting.
► However, they tend not to occur in the same areas. For
example, there is a volcano in Antarctica. No earthquakes
occurred in Antarctica during my research.
►
The Cause of Earthquakes
► The
cause of earthquakes is the shifting tectonic
plates under the earth’s crust.
► Most earthquakes occur near plate boundaries.
► The three types of boundaries are:
 Convergent
 Divergent
 Transform
► Not
all earthquakes occur on plate boundaries.
They can occur in the middle of a plate.