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Plate tectonics

Plate tectonics. LAYERS OF THE EARTH. There are 5 layers of the Earth: CRUST MOHO - Mohorovičić discontinuity MANTLE OUTER CORE INNER CORE . TWO CRUST TYPES. There are two different types of crust.

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Plate tectonics

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  1. Plate tectonics

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

  3. 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

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

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

  6. WHAT THEY ARE

  7. 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

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

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

  10. TYPES OF CONVERGENT • Oceanic vs Oceanic – you get underwater mountains • Continental vs Continental you get mountains • Oceanic vs Continental – SUBDUCTION!

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

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

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

  14. TRANSFORM • Two plates rub against each other.

  15. CALIFORNIA

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