The Rock Cycle

The Rock Cycle is a group of changes among rocks. There are three types of rocks found on the Earth.

Igneous

Igneous rock is formed when molten (hot,melted) rock forms into solid rock. Examples of Igneous rock are granite, obsidian, and basalt. See pictures below:

 Metamorphic

Metamorphic rocks are formed from high temperatures and extreme pressures. Metamorphic rocks make up a large portion of the Earth's crust. Here are two examples of Metamorphic rocks. The first once is pronounced like "nice" and the second one is marble.

Sedimentary

Sedimentary rocks are formed when layers of sand, and sediment (small bits of rock) are layered upon each other on the land and within bodies of water on the Earth. Sandstone and shale are two examples of Sedimentary rocks.

Watch this Prezi to learn more about how the different types of rocks form the rock cycle. After watching the Prezi, see instructions for foldable.

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