rock cycle science fusion – holt mcdougall. 2 scientists define rock as a naturally occurring...
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Rock CycleScience Fusion – Holt McDougall
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Scientists define rock as a naturally occurring solid mixture of one or more minerals that may also include organic matter.
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Natural processes make and destroy rock.The processes change each type of rock into other types of rock and shape the features of our planet.
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The process by which water, wind, ice and changes in temperature break down rock is called weathering.Weathering breaks rocks into fragments called sediment.
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The process by which sediment is moved from one place to another is called erosion.
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Sediments are eventually deposited, or laid down, in bodies of water and other low-lying areas. This process is called deposition.
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Rock can be squeezed by the weight of the rock or the layers of sediment on top of it. As pressure increases so does temperature.
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Magma – the molten or partially molten rock material containing trapped gases produced under the Earth’s surface.
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Lava – magma that flows onto the Earth’s surface.
Lava rock is the rock that forms when lava cools and solidifies.
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Igneous rock—A type of rock that forms from cooled magma or lava.
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Metamorphic rock—A type of rock that is formed over time from existing rock due to extreme pressure and/or heat.
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Sedimentary rock—A type of rock formed from layers of sediment.
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Rocks can be transformed (changed) from one type to another.
This pattern occurs over and over again over time and is called the rock cycle.
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How does sedimentary rock change?
How does metamorphic rock change?
How does igneous rock change?