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Fossils

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