restless earth

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  • restless earth
    • the earth is made up  of three main layers: crust , mantle ,core
      • HOW COVECTION CURRENTS CUASE PLATE MOVEMENT?
        • 1) the core heats the molten rock in the mantle to create convection current
          • 2) heated rock from the mantle rises to the earths surface
            • 3) at the surface the convection current moves the tectonic plates in the crust
              • 4) molten rock cools and flows back to the core to be reheated
      • EXPLAIN WHAT HAPPENS WHEN TWO PLATES ARE PULLED APART?
        • a divergent boundary is formed when two plates are pulled apart?

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