1. Wildcard Relative Dating Geologic Time Radioactive Decay Eons, Eras
Eleanor M. Savko
Radioactive
Decay
Relative
Dating
Geologic
Time
2/23/2019
Wildcard
Eons, Eras
& Epochs
100
100
100
100
100
200
200
200
200
200
300
300
300
300
300
400
400
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400
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500
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500

2. Radioactive isotope that decays to Pb-206.
Eleanor M. Savko
2/23/2019
Radioactive isotope that decays to Pb-206.

3. Eleanor M. Savko
2/23/2019
What U-238?

4. Process of determining age through comparison of radioactive isotopes.
Eleanor M. Savko
2/23/2019

5. What is radiometric/absolute dating?
Eleanor M. Savko
What is radiometric/absolute dating?
2/23/2019

6. Eleanor M. Savko
2/23/2019
The unstable form of N-14.

7. Eleanor M. Savko
2/23/2019
What is C-14?

8. Eleanor M. Savko
2/23/2019
Half-life of U-238.

9. Eleanor M. Savko
2/23/2019
What is 4.5 billion years?

10. Eleanor M. Savko
2/23/2019
Half-life of C-14.

11. Eleanor M. Savko
2/23/2019
What is 5730 years?

12. Eleanor M. Savko
2/23/2019
Geologic law stating that the oldest layer of sediment is always at the bottom of the strata.

13. What is the Law of Superposition?
Eleanor M. Savko
2/23/2019
What is the Law of Superposition?

14. The oldest rock layer
Eleanor M. Savko
2/23/2019

15. Eleanor M. Savko
2/23/2019
What is layer 4?

16. Eleanor M. Savko
2/23/2019
DAILY
DOUBLE!!!

17. Eleanor M. Savko
2/23/2019
Fossils found exclusively in the rock layers of a particular geologic time.

18. Eleanor M. Savko
2/23/2019
What are index fossils?

19. Eleanor M. Savko
2/23/2019
An igneous intrusion is always younger than the rock it has cut across.

20. Eleanor M. Savko
What the Principle of Cross-Cutting Relationships or Igneous Intrusions?
2/23/2019

21. Process used to determine the sequence of a rock layer in relation to the sequence of other rock layers
Eleanor M. Savko
2/23/2019

22. Eleanor M. Savko
2/23/2019
What relative dating?

23. Eleanor M. Savko
2/23/2019
Why Cambrian rocks of Greenland, currently under an ice sheet, have fossils of tropical plants.

24. Eleanor M. Savko
2/23/2019
What is during that geologic time, the land of Greenland was closer to the equator?

25. Fossils from the Mesozoic era contain many of these organisms.
Eleanor M. Savko
2/23/2019
Fossils from the Mesozoic era contain many of these organisms.

26. Eleanor M. Savko
2/23/2019
What are dinosaurs?

27. Extraterrestrial proof of the Permian extinction.
Eleanor M. Savko
2/23/2019
Extraterrestrial proof of the Permian extinction.

28. Eleanor M. Savko
2/23/2019
What are buckyballs?

29. Geologic time frames from smallest to largest.
Eleanor M. Savko
2/23/2019

30. What are epoch, period, era and eon
Eleanor M. Savko
2/23/2019

31. Extinction that ended the Mesozoic era.
Eleanor M. Savko
2/23/2019
Extinction that ended the Mesozoic era.

32. What is the Cretaceous-Tertiary (K-T) extinction?
Eleanor M. Savko
2/23/2019

33. Radioactive isotope of carbon.
Eleanor M. Savko
2/23/2019
Radioactive isotope of carbon.

34. Eleanor M. Savko
2/23/2019
What is C-14?

35. Eleanor M. Savko
2/23/2019
DAILY
DOUBLE!!!!

36. Period that ended with the extinction of all dinosaurs.
Eleanor M. Savko
2/23/2019
Period that ended with the extinction of all dinosaurs.

37. What is the Cretaceous period?
Eleanor M. Savko
2/23/2019
What is the Cretaceous period?

38. Why carbon dating is used to date fossils.
Eleanor M. Savko
2/23/2019
Why carbon dating is used to date fossils.

39. What is it has a short half-life and it’s used to date once living things?
Eleanor M. Savko
2/23/2019

40. Eleanor M. Savko
2/23/2019
Study of fossils.

41. Eleanor M. Savko
2/23/2019
What is Paleontology?

42. Earth’s geologic processes are the same now as in the past.
Eleanor M. Savko
2/23/2019
Earth’s geologic processes are the same now as in the past.

43. What is the Principle of Uniformitarianism?
Eleanor M. Savko
2/23/2019
What is the Principle of Uniformitarianism?

44. The largest time frame: epoch, period, eon or era.
Eleanor M. Savko
2/23/2019
The largest time frame: epoch, period, eon or era.

45. Eleanor M. Savko
2/23/2019
What is an eon?

46. Eon, era, period and epoch in which humans appeared.
Eleanor M. Savko
2/23/2019

47. Eleanor M. Savko
2/23/2019
What are the Phranerzoic eon, Cenozoic era, Quaternary period and Holocene epoch?

48. Three periods of the Mesozoic era.
Eleanor M. Savko
2/23/2019
Three periods of the Mesozoic era.

49. What is Triassic, Jurassic and Cretaceous?
Eleanor M. Savko
2/23/2019
What is Triassic, Jurassic and Cretaceous?

50. Era that means “recent life”.
Eleanor M. Savko
2/23/2019
Era that means “recent life”.

51. Eleanor M. Savko
2/23/2019
What is Cenozoic?

52. Eleanor M. Savko
2/23/2019
Two eons.

53. What are Phranerzoic and Precambrian?
Eleanor M. Savko
2/23/2019
What are Phranerzoic and Precambrian?