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Fossils (Grade 4)

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Fossils

1. 
                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
2. 
For fossils to form, the remains must be covered quickly by                .
  1. coprolites
  2. sediment
  3. water
  4. scavengers
3. 
                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
4. 
A(n)                   is a cavity in rock made when an organism decays.
  1. mold
  2. cast
  3. unconformity
  4. carbonaceous film
5. 
When minerals take the place of once-living materials,                 fossils are formed.
  1. mold
  2. physical
  3. amber
  4. petrified
6. 
Which of the following is an example of a trace fossil?
  1. footprint
  2. leaf
  3. skeleton
  4. trilobite
7. 
Which of the following forms when a fossil mold is filled?
  1. fossil cast
  2. petrified fossil
  3. carbon film
  4. tar pit
8. 
By studying fossils of an animal's                , scientists can find out what the animal might have eaten.
  1. bones
  2. tracks
  3. burrows
  4. droppings
9. 
A fossilized dinosaur footprint is an example of                .
  1. a cast
  2. a trace fossil
  3. a mold
  4. an index fossil
10. 
Which of the following animal parts would be most likely to form a fossil?
  1. skin
  2. fur
  3. bones
  4. blood
11. 
A tree buried in a mineral hot spring would probably form a                 .
  1. trace fossil
  2. mold fossil
  3. time scale
  4. petrified fossil
12. 
Fossils are usually found in
  1. igneous rock
  2. sedimentary rock
  3. metamorphic rock
  4. lava
13. 
An important index fossil for the Paleozoic Era are
  1. fish
  2. sponge
  3. trilobites
  4. plants
14. 
Define fossil.



15. 
Why are fossils important?



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