Rocks and Minerals Study Guide – Flashcards
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Rock
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Natural solid that is usually a mixture of minerals.
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Mineral
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natural non-living solid material found on earth, building of rocks
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Streak
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Color of a powdered mineral when it is rubbed across unglazed ceramic tile
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Luster
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How a mineral reflects light from the surface
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Texture
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Rough, smooth, bumpy, soapy. How something feels to touch.
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Hardness
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resistance of mineral to being scratched
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Cleavage
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Splitting of minerals along smooth surfaces
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Moh's Scale
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Created by scientist Friedrich Mohs, a scale for comparing the hardness of minerals with one another.
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Metamorphic rock
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Rock that is changed into new rock by heat and pressure
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Ingneous rock
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Rock formed by melted rock., rock that forms when magma cools and solidifies
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Color
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The pigment of the sample
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Sedimentary rock
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A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together.
