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25 Cards in this Set
- Front
- Back
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imprint left by the outside of a plant or animal |
mold |
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remains of once-living things that have been preserved |
fossils |
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fossils that show how long-dead animals changed their environments |
trace fossil |
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minerals that fill a mold and have the same shape as the original living thing |
cast |
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a tree buried in a mineral hot spring would probably form a |
petrified fossil |
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which of the following is an example of a trace fossil |
footprint |
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which of the following animal parts would be most likely to form a fossil |
bones |
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by studying fossils of an animal's ___, scientists can find out what the animal might have eaten |
droppings |
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a mold forms when the remains of a dead plant or animal are |
washed out of rock by water |
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heat and pressure may destroy most of the buried remains of a plant or animal, leaving a tin covering called |
carbon film |
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which of the following probably cannot become a fossil |
skin |
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coprolite |
an example of a trace fossil |
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any fuel formed from the remains of once-living organisms |
fossil fuels |
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fuel that is mainly used in transportation |
petroleum |
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type of coal that produces very little heat |
lignite |
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type of coal most often used in factories |
bituminous fues |
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early form of coal made up of dead swamp plants |
peat |
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valuable form of coal that produces a lot of heat and very little smoke |
anthracite |
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gas fuel used for cooking and heating |
natural gas |
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when minerals take the place of once-living materials, ___ fossil are formed |
petrified |
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the type of coal that contains the most carbon and burns hottest is |
anthracite |
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what is coal |
ancient plants changed by overlying mud and sediments into rock |
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a crumbly rock that contains more carbon than does peat |
lignite |
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the drill hits an underwater stream |
gusher |
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the youngest form of coal is |
peat |
