1. Plate Tectonics[Date] Today I will: - Understand basic plate tectonics. - Become familiar with the names of the main plates. Geography Earth Forces

2. Geography Earth Forces The Earth's crust is broken up into pieces called plates.

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6. Geography Earth Forces Heat rising and falling inside the mantle creates convection currents generated by radioactive decay in the core. The convection currents move the plates.

7. Geography Earth Forces Where convection currents diverge near the Earth's crust, plates move apart. Where convection currents converge, plates move towards each other. The movement of the plates, and the activity inside the Earth, is called plate tectonics. BBC Clip

8. Geography Earth Forces Millions of years ago there was only one ‘super-continent’ called Pangaea. Ice Age Clip

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11. Geography Earth Forces 1. 2. 3(a). 3(b).