Grade 8 Week 7: Fossil Evidence

This week we move our focus from the change of plate tectonics to the changes of Earth's history:  the Geologic Time Scale.

What evidence is there for our current understanding of the geologic time scale?

How are fossils formed?

How do we find their age?

Contract 7 give you four choices on showing fossil evidence:  how are they made, finding the life history of a tree from it's rings, modeling a mold and cast, or researching the La Brea tar pits.