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a natural, solid substance that has a definite chemical composition and physical structure |
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type of rock formed when melted rock hardens |
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melted rock that is WITHIN the earth |
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magma (melted rock) that is exposed at the Earth's surface |
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magma (melted rock) that cools underground, deep within the Earth's crust |
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magma (melted rock) that cools on the Earth's surface |
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magma (melted rock) that is exposed at the Earth's surface |
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forms when layers of sediment - bits of rock carved by wind, water and ice - settle over time and bind together |
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made from igneous or sedimentary rock that has been changed by pressure, high temperature, very hot water, or a combination of these factors |
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process by which metamorphic rock is formed |
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the processes that change rock from one kind to another |
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very bottom layer of soil |
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top layer of soil; contains bits of rock, air, water, and decayed plant and animal matter |
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process by which rocks are broken down into smaller and smaller pieces by wind, water, plants, and ice |
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process by which rocks are broken down by chemicals that dissolve parts of them |
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