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2
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rocks containing minerals
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7
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preserved remains of living organisms
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8
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rocks are made up of chemical substances called...
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10
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solid that has a variety of special shapes
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11
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rocks formed from sediments
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12
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a large pit dug into the grounds surface
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13
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rocks that have changed form
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15
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a drilled sample of of rock
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16
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physial properties based on ability to scratch particular minerals
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17
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very sensitive instrument that measures small differences in the gravitational pull in the earrth
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18
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the physical and chemical processes that break rocks rocks down into smaller pieces
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