Circular currents in fluids that are caused by uneven heating. When the fluid is heated, it becomes less dense and rises. As it cools, it becomes more dense and sinks.
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OCEANIC CRUST
Parts of the Earth's crust which are found under oceans
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CONTINENTAL CRUST
The thickest parts of the crust which form continents.
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LITHOSPHERE
The outer rigid layer of the mantle where the magma cools and begin to harden and the crust
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TECTONIC PLATES
Parts of the Earth’s lithosphere that float on the mantle and move independently
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