Across
- 4. This is another tool to determine the age of rocks.
- 5. another name for Mesozoic era
- 7. another name for Paleozoic era
- 8. Marks the formation of the super continent, Pangaea
- 9. Periods of ice ages
Down
- 1. It is like saying you’re relatively younger than your grand father
- 2. another name for Cenozoic era
- 3. Most accurate form of dating, also call radiometric dating
- 6. Rocks in the Petrified Forest in AZ were deposited during this time
- 8. Marks the beginning of Earth approximately 4.6 b.y.