Rocks are all around us. They make up the crust of the Earth and are found on the surface of the Earth.
Rocks can be classified according to how they are formed.
Igneous rocks are formed from rock that has melted
Sedimentary rocks form from deposits
Metamorphic rocks form from other rocks when exposed to heat and pressure

Skip ahead to the specific rock type
0:45 Igneous Rocks
3:16 Sedimentary Rocks
5:39 Metamorphic Rocks

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