EarthquakesEarthquakes

Evan D.Evan D.

Earthquakes and IndianaEarthquakes and Indiana

► Indiana is at a Indiana is at a highhigh risk of risk of earthquakes. earthquakes.

Recent Earthquakes Recent Earthquakes ElsewhereElsewhere

►The most recent earthquakes The most recent earthquakes have occurred in Alaska - have occurred in Alaska - especially the Fox Islands. especially the Fox Islands.

►California is also a high risk California is also a high risk zone as are the Virgin zone as are the Virgin Islands. Islands.

►The South Pacific Ocean is The South Pacific Ocean is another area at high risk for another area at high risk for earthquakes. earthquakes.

Tectonic PlatesTectonic Plates►Areas around tectonic plate boundaries Areas around tectonic plate boundaries

are at high risk for earthquakes. Even are at high risk for earthquakes. Even more so if the area is in the ring of fire. more so if the area is in the ring of fire. Most earthquakes occur near that area.Most earthquakes occur near that area.

Determining EarthquakesDetermining Earthquakes►There is a way to There is a way to

determine what parts of determine what parts of the world are at higher the world are at higher risk then others:risk then others: First you look at where First you look at where

the plate boundaries are. the plate boundaries are. Then you find out what Then you find out what

kind of boundary it is. kind of boundary it is. Then you add up the Then you add up the

information. That will tell information. That will tell you the answer. you the answer.

Earthquakes and Volcanoes (oh, Earthquakes and Volcanoes (oh, my!)my!)

► There is some relationship between earthquakes and There is some relationship between earthquakes and volcanoes. volcanoes.

► They are both caused by the tectonic plates shifting. They are both caused by the tectonic plates shifting. ► However, they tend not to occur in the same areas. For However, they tend not to occur in the same areas. For

example, there is a volcano in Antarctica. No example, there is a volcano in Antarctica. No earthquakes occurred in Antarctica during my research.earthquakes occurred in Antarctica during my research.

The Cause of EarthquakesThe Cause of Earthquakes

► The cause of earthquakes is the shifting The cause of earthquakes is the shifting tectonic plates under the earth’s crust. tectonic plates under the earth’s crust.

►Most earthquakes occur near plate boundaries. Most earthquakes occur near plate boundaries. ► The three types of boundaries are:The three types of boundaries are:

Convergent Convergent DivergentDivergent TransformTransform

►Not all earthquakes occur on plate boundaries. Not all earthquakes occur on plate boundaries. They can occur in the middle of a plate. They can occur in the middle of a plate.