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3
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Describes fine-grained igneous rock that forms when magma cools quickly at or near Earth's surface.
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4
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Physical property of some minerals that causes them to break along smooth, flat surfaces.
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5
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describes metamorpic rick, such as quartzite or marble, whose mineral grains grow and rearrange but generally do not form layers.
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6
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Rock formed when magma or lava cools and hardens.
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7
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Describes a type of igneous rock that generally contains large crystals and forms when magma cools slowly beneath Earth's surface.
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8
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model that describes how rocks slowly change from one form to another through time.
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13
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When sediments are compacted and cemented together or when minerals form from solutions.
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1
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Describes the way a mineral reflects light from its surface.
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2
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Forms when heat, pressure, or fluids act on igneous, sedimentary, or other metamorphic rock to change its form or composition, or both.
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9
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Measure of how easily a mineral can be scratched.
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10
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Mixture of one or more minerals, rock fragments, volcanic glass, organic matter, or other natural materials.
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11
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Color of a mineral when it is in powdered form.
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12
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Physical property of some minerals that causes them to break with uneven, rough, or jagged surfaces.
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14
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Naturally occuring inorganic solid that has a definite chemical composition and and orderly internal atomic structure.
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15
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Loose materials, such as rock fragments, minerals frains, and the remains of once-living plants and animals, that have been moved by wind, water, ice or gravity.
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