KEY POINTS IN THIS CHAPTER •
Review the terms and sort out which represent processes involved in geography, which are structures involved in geography, and which are just types of rock.
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The three main types of rock are igneous, metamorphic and sedimentary.
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Rocks get acted on by chemical, mechanical, and biological forces to change them.
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Sediment can get layered out in air or water.
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All magma eventually cools with grains that depend on the rate of cooling. High rate means small grains, while low rates of cooling lead to larger grains.
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Pay attention to colors in rock as many represent a type of mineral.
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