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lesson 1
fossil evidence of evolution
directions: use your textbook to respond to cach statement.
1. the diagram below represents a group of un disturbed rock layers. draw one fossil in
each of these rock layers: b, c, e, and g.
rock layer g
rock layer f.
rock layer e
rock layer d
rock layer c
rock layer b
rock layer a
2. write the terms older and younger on the correct lines on either end of the arrow to
correctly indicate the ages of the rocks in the rock layer diagram.
3. look at the fossil you drew in rock layer c.
a. which fossil (or fossils) are older?
b. which fossil (or fossils) are younger?
4. which fossil is the youngest?
5. what method of fossil dating does this activity represent?
6. which type of rock is most likely found in layers b, c, e, and g? explain your reasoning.
copyright glencoe mcgraw-hill, a division of the mcgww-hill companies inc
7. if rock layers a, d, and f are igneous rock, which type of dating could also be carried
out? explain your response.