Science: Ocean Origins
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Avg score: 55% • Most missed: “The deepest ocean is the _______ and the shallowest is the _______”
Science: Ocean Origins
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25 Questions

1. Scientific evidence for the origin of the ocean

2. How is salinity expressed?

3. radioactive dating

4. Where did the salts in the ocean come from?

5. What is the average salinity throughout the world?

6. Where life was thought to have begun on the ocean floor

7. Continental crust (lithosphere) is composed of

8. A type of rock present just after Earth solidified

9. The physical description of the inner core

10. Oceans cover _____% of Earth's surface, with _____% of the water being oceans

11. Starting from the surface, what is the correct order of Earth's layers?

12. What two gasses are missing from the inner planets, but found in large amount in the outer planets?

13. Salinity is affected by

14. Earth's main oceans

15. Why is the ocean not fresh?

16. The first living organisms were

17. Granite and Basalt are an example of

18. The Big Bang occurred

19. The Pacific Ocean is ________ and the Atlantic Ocean is _________

20. How old do scientists think the oceans are and why

21. The first organisms with the capacity for photosynthesis

22. What increases and decreases salinity?

23. The theory of how Earth was formed

24. Ocean formed ___ years ago

25. About how many different chemical elements are found in sea water?

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