Page 111 - Science Course 3 (Book 1)

Mo3-L1: Key Concept Organizer

Direction: : Answer each question in the space provided.

Fossil Formation

Does this fossil show
What conditions existed
What are the different for this type of fossil How did this type of physical structure,
types of fossils? fossil form? movement, or
to form?
behavior—or all three?
1.

2.

3.

4.

5.

Mo3-L1: Key Concept Check

Direction: On each line, write the letter(s) of the term(s) that correctly matches the description. Some
terms will be used more than once.

1. Original tissues of the organism can be preserved. A. mineralization
2. Sediment fills an impression left in the sand. B. carbonization
3. organism buried in the sand
4. Dead organism is compressed over time. C. molds and casts
5. preserves an organism’s movement D. trace fossils
6. a fossil copy of the organism in a rock E. original material
7. includes mammoths frozen in ice
8. Tracks fill with sediment that hardens.
9. Minerals in water replace an organism’s original material and
harden into rock.
10. Pressure drives off gases and liquids, leaving an outline of plant
leaves, fish, and insects.
11. An impression of an organism is left in rock.
12. The process requires mud or sand.
13. Some organisms have been preserved in tar pits.
14. Only the external features of the organism are shown.
15. can result in a fossil of wood
16. preserves the internal structure of an organism
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