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13 Cards in this Set
- Front
- Back
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Sedimentary Rock
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Grains of sand and other sediment are eroded from hills and mountains and washed down a river to the ocean. Over time, the sediment forms thick layers on the ocean floor. Eventually, the grains of sediment are compacted and cemented together to form ___________
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Metamorphic Rock
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When large pieces of the Earth's crust collide, some of the rock is forced downward. At great depths, intense heat and pressure heat and squeeze the sedimentary rock to change it into ______________
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Magma
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The hot liquid that forms when rock partially or completely melts is called magma. Where the metamorphic rock comes into contact with magma, the rock tends to melt. The material that began as a collection of sand grains now becomes part of the ______
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Igneous Rock
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Magma is usually less dense than the surrounding rock, so magma tends to rise to higher levels of the Earth's crust. Once there, magma cools and solidifies to become ___________
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Sediment
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Uplift and erosion exposes the igneous rock at the Earth's surface. The igneous rock then weathers away into grains of sand and clay. These grains of ______ are then transported and deposited elsewhere, and the cycle begins again.
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What are two characteristics that scientists use to classify rocks?
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Composition and texture
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How is the composition of a rock determined?
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The composition of a rock is determined by the minerals that make up the rock.
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The texture of a rock is determined by...
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the size, shape, and positions of the grains that make up a rock.
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erosion
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the process by which wind, water, ice, or gravity transports soil and sediment from one location to another.
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deposition
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the process in which material is laid down
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uplift
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the movement within the Earth that causes the rocks inside the Earth to be moved to the Earths surface.
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processes that shape the Earth's features
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1. weathering, erosion, and deposition.
2. heat and pressure 3. uplift |
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composition
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the chemical makeup of a rock.
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