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hr 1 group 4

Published on Nov 24, 2015

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PRESENTATION OUTLINE

1.

Earthquakes and Volcanoes

BY HR1 GROUP 4
Photo by Alwita
2.

The Theory of Plate Tectonics
A scientific theory that the Earth's surface is made up of very large sections that move as slowly as your fingernails grow.

Photo by WorldIslandInfo.com
3.

Lithospheric Plates

  • Eurasion
  • Indo-Australia
  • Philippian
  • North American
  • Juan De Fuca
Photo by hangglide
4.

Lithospheric Plates

  • Carribean
  • Cocos
  • Nazca
  • Antartica
  • Scotia
Photo by hangglide
5.

Lithospheric Plates

  • South American
  • African
  • Arabian
Photo by hangglide
6.

Volcanoes
At plate boundaries huge pieces of the crust diverge or converge. As a result the crust often fractures allowing magma to reach the surface.

Photo by flequi
7.

Earthquakes
One theory is that covetion within the Earth's mantle pushes the plates and some times they collide. When they collide it causes the earthquakes on mid ocean riges.

Photo by martinluff
8.

A Fun Fact

EARTH'S CONTINENTS MOVE 2,OOO,OOO CM EVERY MILLION YEARS.(2CM EACH YEAR)
Photo by Skakerman

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