Go directly to Plate Tectonics activity (114K - requires Shockwave) Take a hard-boiled egg and crack its shell. Does the egg remind you of anything The Earth, perhaps The egg could be seen as a tiny model of the Earth. The thin shell represents the Earth's crust, divided into plates; within the shell is the firm but slippery mantle. Move the pieces of shell around. Notice how the shell buckles ...

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