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17 Cards in this Set
- Front
- Back
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Mineral
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A solid, non living substance that occurs naturally in rocks or in the ground
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Rock
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A solid substance made of minerals
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Igneous rocks
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Rocks formed when melted rock cools and hardens
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Sedimentary rock
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Rock that forms from sediment (pieces of rock that have been broken down and moved.)
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Metamorphic rock
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Rock that has changed from another type of rock by high temperature and pressure
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Rock cycle
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The sequence of processes that change rocks over long periods
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Weathering
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The breaking down of rock on earth's surface into smaller pieces
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Erosion
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The process of moving sediment
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Humus
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The remains of decayed plants and animals
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Horizons
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Layers
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Bedrock
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The solid rock that forms the earth's surface, the bottom horizon
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Sand
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The largest particles found in soil
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Clay
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The smallest soil particles
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Fertilizer
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Adds nutrients to the soil
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The two ways rock can be weathered
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Physically
Chemically |
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Causes of weathering by physical processes
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Water
Ice Living things Wind |
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Soil formation
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Humus
Water and air- make up about 1/2 soil Horizons/layers Bedrock |
