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Fossils (Grade 4)

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                are carbonized impressions of leaves, stems, flowers, and fish that are usually found in soft clay or mud.
  1. Trace fossils
  2. Imprints
  3. Molds
  4. Coprolites
For fossils to form, the remains must be covered quickly by                .
  1. coprolites
  2. sediment
  3. water
  4. scavengers
                are the remains of species that existed on Earth for relatively short periods of time, were abundant, and were widespread geographically.
  1. Casts
  2. Unconformities
  3. Index fossils
  4. Half-lives
A(n)                   is a cavity in rock made when an organism decays.
  1. mold
  2. cast
  3. unconformity
  4. carbonaceous film
When minerals take the place of once-living materials,                 fossils are formed.
  1. mold
  2. physical
  3. amber
  4. petrified
Which of the following is an example of a trace fossil?
  1. footprint
  2. leaf
  3. skeleton
  4. trilobite
Which of the following forms when a fossil mold is filled?
  1. fossil cast
  2. petrified fossil
  3. carbon film
  4. tar pit
By studying fossils of an animal's                , scientists can find out what the animal might have eaten.
  1. skin
  2. tracks
  3. burrows
  4. droppings
A fossilized dinosaur footprint is an example of                .
  1. a cast
  2. a trace fossil
  3. a mold
  4. an index fossil
Which of the following animal parts would be most likely to form a fossil?
  1. skin
  2. fur
  3. bones
  4. blood
A tree buried in a mineral hot spring would probably form a                 .
  1. trace fossil
  2. mold fossil
  3. time scale
  4. petrified fossil
Fossils are usually found in
  1. igneous rock.
  2. sedimentary rock.
  3. metamorphic rock.
  4. molten rock.
Which is an important index fossil for the Paleozoic Era?
  1. fish
  2. sponges
  3. trilobites
  4. plants
Define fossil.

Why are fossils important?

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