1. Many planets one earth K-T ex 50 $ 50 $ 50 $ 100 $ 100 $ 100 $ 200 $
Eleanor M. Savko
Many planets
one earth
Geologic Time
5/28/2018
K-T ex
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2. How much of the universe is composed of dark matter?
Eleanor M. Savko
5/28/2018
How much of the universe is composed of dark matter?

3. Eleanor M. Savko
5/28/2018
26.8 %

4. Eleanor M. Savko
5/28/2018
Oceans formed??

5. 3.5 BYA

6. In a sequence of rock strata, the oldest layer will lie below or underneath the youngest.

7. Law of superposition

8. Which Steno’s law?

9. Principle of crosscutting relations

10. Which rock type?
Rock which is subjected to heat (temperatures greater than 150 to 200 °C) and pressure (1500 bars), causing profound physical and/or chemical change

11. Metamorphic rocks

12. ______________form the core of modern continents

13. Cratons

14. Spans almost 90 percent of Earth’s history

15. Precambrian

16. Early supercontinent

17. Rodinia

18. During the early Paleozoic, animal forms were?
Only flying insects
Limited to swamps
Dominated by large reptiles
Most abundant on land
Restricted to marine environments

19. e. Restricted to marine environments

20. The Cenozoic is best known as _______

21. Age of mammals

22. Deposits worldwide contain pieces of melted or crushed rocks blasted from impact site

23. EJECTA

24. glassy spheres (0.1 mm—2 mm) Found close and far from impact site

25. spherules

26. closer to impact site
2-3 cm in size
More irregular shapes

27. tektites

28. fragments of broken up rock

29. breccia

30. Which are these particles?

31. Shocked quartz