Exam 1

4. Which process was involved in formation of Earth's first oceans?
7. the earliest form of crust
8. When the oldest portion of the continent is exposed at the surface
9. What is the earliest form of life in the Archean?
11. the oldest minerals on Earth
12. One of the two main methods of developing oxygen in the atmosphere?
14. primary mineral for the composition of the moon
17. presence of 3.46by old paleosol implies presence of what?
18. Terrestrial planets are ________ than Jovian planets
19. When the oldest part of the continent is covered by much younger sediment

1. chondrites these meteorites have potentially important implications for life on our planet
2. The cold accretion model states that Earth’s layers formed from/as:
3. one of the terrestrial planets
5. One the two dominant rocks that composed the Archean craton?
6. allows us to know a planetary body is moving away from Earthfrom Earth
10. the longest wavelength of visual light
11. The hot accretion model states that Earth’s layers formed from/as:
13. Oldest, most stable portion of a continent
15. komatiites are high in magnesium and?
16. The presence of a banded iron formation tells us that what critical element is missing from the atmosphere?