Earthquakes

1
Earthquakes

• Evan D.

2
Earthquakes and Indiana

• Indiana is at a high risk of earthquakes.

3
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.

4
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.

5
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.

6
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.

7
The Cause of Earthquakes

• The cause of earthquakes is the shifting tectonic
  plates under the earths 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.