Earth Materials, Processes and Environments

GEOL-1121    Fall 2015

Answers for Practice Test #2

1. b                                         10. c                                       19. a

2. c                                         11. d                                       20. d

3. d                                         12. b                                       21. d

4. c                                         13. c                                       22. d

5. a                                         14. c                                       23. d

6. b                                         15. c                                       24. a

7. b                                         16. b                                       25. c

8. a                                         17. a

9. c                                         18. a

26) earth materials, processes and environments

27-28) High temperature, water-rich magmatic fluids that produce economic deposits.

29) volcanic bomb

30) It formed the atmospheres and oceans.

31-32) mud flow; Mt. St. Helens, etc.

33) Pyroclastic ash and gases can block and absorb sunlight.

34) tuff

35) Lower viscosity allows for passive release of gases.

36) lava dome

37) columnar joints

38-39) pedalfer; o- and a-horizons have been eroded.

40) 9%

41-42) unloading; root wedging

43) texture and composition

44-45) cementation, compaction and mineralogic changes

46) kaolinite

47) acid

48) gravel

49) rock salt or rock gypsum

50) Fossils

Extra Credit: Coal or Peat