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12 Cards in this Set

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