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12 Cards in this Set
- Front
- Back
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mineral
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a solid nonliving substance that occurs naturally in rocks or in the ground
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rock
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a solid substance made of one or more minerals
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igneous rock
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a type of rock that forms from melted rock that cools and hardens
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sedimentary rock
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a type of rock that forms when layers of sediment are pressed together
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metamorphic rock
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a type of rock that forms when heat or pressure change an existing rock
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rock cycle
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the sequence of processes that changes rocks from one type to another over long periods
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weathering
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the breaking down of rocks on Earth’s surface into smaller pieces
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erosion
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the process of moving sediment from one place to another
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humus
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the remains of decayed plants or animals in the soil
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sand
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the largest particles that make up soil
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bedrock
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the solid rock that forms Earth’s surface
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clay
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the smallest particles that make up soil
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