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15 Cards in this Set
- Front
- Back
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A type of orginisim that no longer exists in earth is said to be |
Extinct |
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The law of ______________ states tht in sedimentary rocks each layer is older than the layer above itb |
Superposition |
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What type of fossil is formed when minerals replace all or parts of a orginisim |
Premineralization |
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What type of fossil provides clues about the behaviors or activities of a ancient orginism |
Trace fossil |
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The _________ _____ of a rock is its age compared to the ages of other rocks or index fossils |
Relative age |
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The fossil record can show how orginism have ____ over time |
Changed |
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What type of fossil shows whole or part of an orginism trapped in amber ice or tar |
Preserved |
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If a layer of sandstone is on top of a layer of limestone that contains a 200 million year old fossil what would the sandstone be older or younger than the 200 million year old fossil |
Younger |
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Finding fossils of sea creatures in a area suggests that the area was once |
Under water |
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A fossil that forms when a orginism decays and leaves a hollow space in the rock is called a fossil |
Mold |
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What type of fossil is formed when a thin layer or carbon is left between rock and orginism |
Carbonized |
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What are the 4 criteria for a index fossil |
Lived in a short period of time on earth , found over wide area , seen frequently and recognized |
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Fossils give scientists clues about what three things form the past |
Climate evolution and history of earth |
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Older layers of rock are found toward the and younger rock is found toward the |
Core and surface |
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All of the fossils ever found are part of the that provides evidence of history of earth |
Fossil record |
