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3rd - 5th Mega Review!!!

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  • rock
    A nonliving material made of one or more minerals.
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  • igneous rock
    A rock that forms when melted rock cools and hardens.
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  • magma
    Melted rock that is below the Earth's surface.
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  • lava
    Melted rock that flows onto land.
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  • weathering
    the process of wearing down or breaking down rocks into smaller pieces
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  • erosion
    the process of moving weathered rock from one place to another
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  • deposition
    the process of depositing (dropping) sediment
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  • sediment
    small pieces of weathered rock such as gravel, sand, or pebbles
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  • glacier
    slow moving river of ice
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  • Ice Age
    period of time when much of the Earth was covered by glaciers
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  • Continental drift
    Theory that the continents slowly moved over Earth's surface.
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  • Fossil
    It is any trace of an ancient organism preserved in rock.
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  • Plate tectonics
    It explains that the earth is divided into pieces
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  • Fault
    A crack in the earth's crust.
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  • rock
    a solid mixture of crystals of one or more minerals or other materials
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  • rock cycle
    the process by which one rock type changes into another rock type
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