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Fossils

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  • Which of these must happen first for a fossil to form?
    Sediments fill a mold and form a cast.
    A plant of animal is eaten.
    A plant or animal is covered by sediment.
    Sediments are pressed together and hardened.
  • Why are there more animal fossils than plant fossils?
    Plants are smaller than animals.
    There were more ancient animals than ancient plants.
    Plants have softer body parts than animals.
    Animals eat plants.
  • The hardened remains of living thing that died long ago.
    Extinct
    Fossil
  • Which type of fossil would look like an actual body part of a once-living thing?
    a mineral
    a cast
    a footprint
    a trace
  • why are there many fossil imprints of ferns?
    Ferns have changed little over time.
    Fern parts are hard like bone.
    Once, most plants on Earth were ferns.
    Ferns were larger than other ancient plants.
  • Which is an imprint fossil?
    Petrified wood
    bone
    a cast
    an animal track
  • Which animal is extinct?
    rhinoceros
    elephant
    camel
    saber-toothed cat
  • If scientists found this fossil, what could they infer?
    what kind of animal ate this fish
    that this fish lacked oxygen
    what fish were like today
    that water once covered the area
  • Why don't we know what many ancient plants looked like?
    Animals ate them all.
    They were trapped in tar.
    They rotted away.
    Minerals destroyed them.
  • Which sentence is TRUE?
    Some living things have not changed in millions of years.
    Fossils show that the coelacanth fish has changed.
    All once-living organisms left behind fossils.
    Fossils show that camels have not changed.
  • How are an elephant and a mammoth alike?
    both have tusks
    both live in a warm climate
    both have thick, shaggy fur
    both are extinct
  • In which type of rock are most fossils found?
    sedimentary
    igneous
    volcanic
    metamorphic
  • What replaces the wood of a once-living tree to form petrified wood?
    a cast
    minerals
    amber
    a mold
  • Which term describes this fossil?
    amber
    cast
    mold
    bone
  • A group of living things that is no longer living.
    Extinct
    Fossil
  • A fossil animal has a mouth full of sharp, pointed teeth. What can you infer about the animal?
    The animal ate fruits and vegetables.
    The animal did not live on land.
    The animal ate meat.
    The animal is closely related to a shark.
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