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Fossils

  • Game Code: 1336487
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    Fossils
  •   Study   Slideshow
  • Which is a step in the process of how animals become fossils?
    Most of the animal rots away, leaving only the skin.
    The soft parts of an animal turn to rock.
    Sediment covers an animal's remains.
    An animal dies high up on a mountain.
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  • The oldest fossils are usually found
    deep underground.
    on ocean beaches.
    on top of mountains.
    floating in rivers.
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  • The history of how life has changed on Earth over millions of years is revealed by
    animals living today.
    history books.
    the fossil record.
    bones in the desert.
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  • If a scientist finds fossilized trees in what is now a desert area, the fossils are evidence that the
    area used to home to small animals.
    climate there has not changed much.
    area used to have no carnivores.
    climate there was once rainy.
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  • Which of the following can become a fossil?
    all of these.
    an insect trapped in sap
    a plant’s leaves
    a large animal
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  • What must happen for a fossil to form?
    it is left unburied
    it is in deep water
    it is buried quickly
    it is kept dry
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  • What is a fossil record?
    a record of an organism left behind.
    the rock left behind after a bone is fossilized
    evidence that animals lived a long time ago
    the history of how life on Earth has changed
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  • A _________ is an example of a trace fossil.
    fossilized tooth
    piece of amber
    petrified tree
    fossilized footprint
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  • Almost all fossils are found in ________
    dirt that has been packed down.
    groundwater.
    sedimentary rocks.
    amber.
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  • How are fossils revealed?
    water washes dirt away
    all of these
    people dig up soil
    wind weathers away rock
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  • An insect in amber is an example of
    a fossil record.
    a trace fossil.
    a whole body fossil.
    an exposed fossil.
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  • How do bones change when they become fossils?
    bone material changes shape
    bones become lighter and weaker
    bone material is replaced by rock (minerals)
    bone becomes stronger and harder
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  • Finding a trilobite is evidence that an ancient environment was part of
    a forest.
    a canyon.
    an ocean.
    a mountain.
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  • What do the petrified trees in Petrified Forest National Park suggest about the ancient environment?
    it was near a body of water
    there was a desert
    there was more rain
    there was no dry land
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