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1
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the way light reflects off a mineral's surface
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3
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hot, molten rock below Earth's crust
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7
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a type of rock that forms when sediments are pressed together in layers
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8
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a property of minerals that tells how well it resists scratcing
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9
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a scientist who studies rock to learn about Earth's history
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10
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magma that reaches Earth's surface
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11
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a squeezing force that pushes thing together
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12
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a type of rock formed when melted rock cools and hardens
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13
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the series of processes that show how rocks change from one into another
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14
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the way a mineral splits or breaks along flat surfaces
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15
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a property of minerals that tells the color of powder left behind when the mineral is scratched along a white or black tile
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