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Plate tectonics.

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Presentation on theme: "Plate tectonics."— Presentation transcript:

1 Plate tectonics

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3 LAYERS OF THE EARTH There are 5 layers of the Earth: CRUST
MOHO - Mohorovičić discontinuity MANTLE OUTER CORE INNER CORE

4 TWO CRUST TYPES There are two different types of crust.
Continental crust which is what the continents are and what they are moving on. The crust is made of rock - Granite Oceanic Crust which is what is below the oceans, the oceans are on top of the oceanic crust. The crust is made of rock - Basalt

5 TWO CRUST TYPES Continental crust is thicker and oceanic crust BUT oceanic crust is denser than continental crust.

6 WHY THEY MOVE The Earth’s plates move because of convection currents in the mantle.

7 WHAT THEY ARE

8 WHAT THEY ARE The plates are made up of the oceanic and continental crust on the planet. The plates are broken into different sizes and shapes. The plates move around the planet because of convection currents in the mantle

9 HOW THE MOVE The plates move in three major directions with variations in each type. The directions are: Convergent Divergent Transform

10 CONVERGENT Convergent means come together or converge in one spot.
The plates are moving towards each other until they meet.

11 TYPES OF CONVERGENT Oceanic vs Oceanic – you get underwater mountains
Continental vs Continental you get mountains Oceanic vs Continental – SUBDUCTION!

12 CONVERGENT-SUBDUCTION
Subduction – the Oceanic plate goes below the continental plate due to the density of the Oceanic plate Mountains Volcano

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14 DIVERGENT NOT THE BOOK/MOVIE!!
The plates are moving away from each other.

15 Divergent Two types of divergent plates
Oceanic vs oceanic – sea floor spreading and mid ocean ridges . Continental vs continental - rift valleys

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17 TRANSFORM Two plates rub against each other.

18 CALIFORNIA

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