Answers to the Second Midterm

1. True
2. True
3. False (Sulfur is element 32; Oxygen is element 16)
4. False (Uranium is formed by Neutron Capture)
5. False (elements are defined by # of protons)
6. True
7. False
8. False
9. False
10. False (most of the iron is in the core, not the crust)
11. False
12. True
13. False
14. False
15. True
16. True
17. False
18. False
19. False
20. False
21. False (more like one every hundred years)
22. True
23. D
24. A
25. E (like Uranium, gold, etc)
26. C
27. B
28. D
29. A
30. E
31. B
32. C
33. D
34. B
35. A
36. C
37. E
38. C (but 1/2 credit given for A,D, or E)
39. C (but 1/2 credit given for B)
40. E
41. C
42. D
43. D
44. A
45. B
46. C
47. E (Ozone layer forms only 600 million years ago)
48. D (which is why there is little iron in the crust)
49. A
50. D
51. D
52. C
53. C
54. C (definitely)
55. Dogs