Victoria O'Connor

What is a rock?

Rocks are composed of minerals and are classified how they are formed by their origin. Rocks fall into three different categories Igneous, Sedimentary and Metamorphic.

Rock Cycle

The Rock cycle is a model showing how rocks and sediments change over time. There is two processes external and internal. External processes is when it occurs on earth's surface. Internal is when is occurs within the earth.
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