Rocks

By: Sam Sosa

Types of Rocks

A rock is a solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil or oceans.

The Rock Cycle

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The Rock Cycle

The Rock Cycle is a group of changes Igneous rock forms when magma cools and makes crystals. Magma is a hot liquid made of melted minerals. The minerals can form crystals when they cool. Igneous rock can form underground, where the magma cools slowly. Or, igneous rock can form above ground, where the magma cools quickly.