1.
1.
Fossil Facts!
Use Cells and Heredity Textbook p.156-162
What parts of an animal
usually form fossils?
The formation of any fossil is a __________________ event.
Usually only the __________________ parts of an organism, such as the
_________________ or ______________________ of animals, form fossils.
How does a fossil form?
Look at Figure 14 at the top of p. 156. Summarize the 4 steps of how
the crocodile fossil formed:
1.
2.
3.
4.
Give an example of
preserved remains.
What are the two ways
scientists can determine a
fossil’s age?
What is relative dating?
Definition:
Relative dating can help scientist determine whether one fossil is
_______________ than another. However, relative dating doe s not tell
scientists the fossil’s ___________________ age.
In this diagram label which layer would be the oldest and youngest:
(this is not in your book!!)
2. Which type of dating allows
scientists determine the
actual age of fossils?
3. What are radioactive
elements?
4.
What is half-life?
How do scientists use the
amount of radioactive
elements in a sample to
calculate the age?
Why do scientists know very
little about the
Precambrian time period?
Glue only this portion
of the paper into your notebook!
Fold your paper up so it fits!