Study

Fossils

  •   0%
  •  0     0     0

      Back   Restart
  • Fossils found in the same rock layers
    Index fossils
  • The types of organisms that are fossilized in a layer give clues about what the land was like.      Is this true or false?
    True
  • How are body fossils formed?
    They form when the body of a dead plant or animal is covered in sediments.
  • Pollens cannot form fossils.          Is this true or false?
    False
  • What is this?
    Geologic time scale
  • What is a fossil?
    They are mineralized remains or evidence of plants and animals that lived long ago
  • The clay layer formed from a meteorite impact at the end of the Mesozoic era
    K-T boundary
  • When many species go extinct at the same time
    Mass extinction
  • What is a geologic time scale?
    Fossils appear in rock strata in a certain order. This record tells how organisms have changed over time
  • They are mineralized remains or evidence of plants and animals that lived long ago
    Fossils
  • What is one famous example of a key bed?
    A thin layer of clay that is called the K-T boundary
  • What is a key bed?
    It is a layer of rock that scientists can clearly identify.
  • What are index fossils?
    Fossils found in the same rock layers
  • What is a mass extintion?
    It happens when many species go extinct at the same time
  • What is the K-T boundary?
    The clay layer formed from a meteorite impact at the end of the Mesozoic era
  • Fossils can tell scientists about environments on Earth a long time ago.                                                  Is this true or false?
    True
  • What do scientists use to identify key beds?
    They use index fossils or characteristics unique to rock layers to identify the key bed
  • It is a layer of rock that scientists can clearly identify
    Key bed
  • Layers of rock that have the same index fossils are not the same age. Is this true or false?
    False
  • They are the particles from death organisms, along with pieces of rock
    Sediment
  • What is a sediment?
    They are the particles from death organisms, along with pieces of rock
  • Fossils appear in rock strata in a certain order. This record tells how organisms have changed over time
    Geologic time scale
    • Your experience on this site will be improved by allowing cookies.