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12 Cards in this Set
- Front
- Back
Fossil
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Remains of once-living things that have been preserved
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Trace Fossil
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Fossils that show how long-dead animals changed their environment (footprints, burrows,etc.)
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Mold Fossil
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Imprint left by a plant or animal when the remains of a dead plant or animal are washed out of a rock by water
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Cast Fossil
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Minerals that fill a mold and have the same shape as the original living things
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Fossil Fuel
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Any fuel formed from the remains of once-living organisms (in sedimentary rock)
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Petroleum
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Fuel that is mainly used in transportation
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Natural Gas
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Gas fuel used for cooking and heating
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Peat
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Early form of coal made up of dead swamp plants
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Lignite
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Type of coal that produces very little heat
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Bituminous Coal
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Type of coal most often used in factories
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Anthracite
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Valuable form of coal-hardest, contains most carbon, burns the hottest, little smoke
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Petrified
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Fossils formed when minerals take the place of once-living materials
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