Earth History

Essential Questions

How can we tell how the Earth has changed over time?

How do we know the history of life on Earth?

Learning Targets

I can determine the relative age and absolute age of rock layers based on stratigraphy, index fossils, and radioactive decay.

Things you need to know

1. Stratigraphy

2. Age of oceans

3. Evolution and oxygen

4. Fossil record

5. Plate motion