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6th Grade STEM: Fossils and Geologic Time
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6th Grade STEM: Fossils and Geologic Time
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25 Questions

1. What percentage of the earth's history does Precambrian cover?

2. What type of carbon is radioactive and unstable?

3. Are intrusions and faults younger or older than the layers they cut through?

4. Approximately how old is Earth?

5. Do rock fossils preserve the actual body part or an porganism?

6. What type of vegetation evolved in response to the Earth's cooling temperatures?

7. Describe the appearance of Earth during the Hadean Eon.

8. In which type of rock are fossils typically found?

9. Explain the origin of whales.

10. Which period is known best for the diversification of fish?

11. At the end of what period was the world's largest mass extinction?

12. During which eon did the oceans first form?

13. Why were birds better suited for flying than dinosaurs?

14. Why did scientists use rocks from the moon to determine the earth's age?

15. Will younger fossils have more or less parent material?

16. Why can't you use absolute dating on a sedimentary rock?

17. Are inclusions younger or older than the layers they cut through?

18. What organism is found in the oldest fossils?

19. What types of isotopes are unstable and radioactive?

20. Contrast the plant life during the Jurassic and Cretaceous Periods

21. How is geologic time divided by scientists?

22. What organisms where the first vertebrates and during which period did they appear?

23. What was the first bird?

24. What are 3 types of fossils that preserve the actuaL body parts of an organism?

25. Will older fossils have more or less parent material?

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