PROBLEM: How can fossils be useful?

PREDICTION:

EXERCISE I. Below are four different well cores. Correlate between the cores using the fossils.

EXERCISE II.

MATERIALS: prepared well cores

Look at the each core; notice that they contain fossils. Describe the key characteristics of each fossil. Match up the fossils between each core. Draw the four different cores and connect the "horizons" that are the same from one well core to another.

CONCLUSION: How do cores of the Earth help us to learn about the Earth?