REVIEW

1. REVIEW By: Dillon Ashburn

2. THE BOARD

3. T1 100 Points Early mapmakers thought continents might have moved based on their observations of a.Gondwanaland. b.rock and fossil evidence. c.matching coastlines. d.earthquakes and floods.

4. T1 100 Point Answer C Back To Board

5. 200 Points T1 Pangaea was an ancient supercontinent made up of a.South Africa, India, Australia, and South America. b.the United States, Greenland, and Europe. c.Antarctica, India, and South America. d.all of Earth’s continents.

6. 200 Points Answer T1 d Back To Board

7. 300 Points T1 To support his hypothesis of continental drift, Alfred Wegener did NOT use a.ancient climatic evidence. b.magnetic field data. c.data on ancient reptiles and ferns. d.evidence from rock formations.

8. 300 Points Answer T1 b Back To Board

9. 400 Points T1 Fossil evidence that supported Wegener’s idea of continental drift included a.land-dwelling animals. b.ocean plants. c.ocean mammals. d.tropical flowers

10. 400 Points Answer T1 a Back To Board

11. 500 Points T1 Fossils of aquatic reptiles found in freshwater rocks suggested to Wegener that these reptiles a.swam the great distances between continents. b.probably did not cross the oceans. c.ate Glossopteris. d.once lived in Earth’s oceans.

12. 500 Points Answer T1 b

13. T2 100 Points Based on observations of fossils of Glossopteris, Wegener concluded that a.magnetic reversals had occurred in Earth’s past. b.continental rocks containing these fossils had once been joined. c.Earth’s continents were never joined. d.Glossopteris grew only in the tropics. Back To Board

14. T2 100 Points Answer b Back To Board

15. T2 200 Points Coal beds in Antarctica indicated to Wegener that this continent was a.always cold. b.inhabited by penguins. c.once located closer to the equator. d.once beneath the ocean.

16. T2 200 Points Answer c Back To Board

17. T2 300 Points Based on the glacial deposits he observed, Wegener argued that a.glaciers form near the equator. b.Earth’s axis of rotation had changed in the past. c.landmasses drifted away from the south pole. d.Glossopteris could not survive hot weather

18. T2 300 Points Answer c Back To Board

19. T2 400 Points Most scientists at the time rejected Wegener’s hypothesis of continental drift because he a.had collected little evidence to support his hypothesis. b.would not state his hypothesis publicly. c.insisted that Earth’s axis of rotation had changed. d.couldn’t explain how or why the continents moved.

20. T2 400 Points Answer d Back To Board

21. T2 500 Point TRUE/FALSE Sonar uses sound waves to measure water depth. Back To Board

22. T2 500 Points Answer True

23. T3 100 Points TRUE/FALSE Maps made from sonar and magnetometer data led to the discovery of ocean ridges and deep-sea trenches

24. T3 100 Points Answer TRUE Back To Board

25. T3 200 Points TRUE/FALSE Deep-sea trenches are vast, underwater mountain chains

26. T3 200 Points Answer False; Ocean ridges Back To Board

27. T3 300 Points Rock samples taken near ocean ridges are older than rocksamples taken near deep-sea trenches.

28. T3 300 Points Answers False; younger Back To Board

29. T3 400 Points The thickness of ocean-floor sediments decreases with distancefrom an ocean ridge

30. T3 400 Points Answers False; increases Back To Board

31. T3 500 Points The oldest ocean floor rocks are about 3.8 billion years old.

32. T3 400 Points Answers False; 180 million Back To Board

33. T3 500 Points The study of the magnetic record preserved in Earth’s rocks is called paleomagnetism.

34. T3 500 Points Answer True Back To Board

35. T4 100 Points An isochron is a change in Earth’s magnetic field.

36. T4 100 Points Answer False; A magnetic reversal Back To Board

37. T4 200 Points TRUE/FALSE Earthquake activity and volcanism are common alongocean ridges.

38. T4 200 Points Answer True Back To Board

39. T4 300 Points TRUE/FALSE The magnetic patterns on either side of a deep-sea trench aremirror images of each other.

40. T4 300 Points Answer False; ocean ridges Back To Board

41. T4 400 Points TRUE/FALSE The theory of continental drift states that new ocean crust isformed at ocean ridges and destroyed at deep-sea trenches.

42. T4 400 Points Answer False; seafloor spreading Back To Board

43. T4 500 Points TRUE/FALSE The theory of seafloor spreading explains that Earth’scontinents move because they ride atop ocean crust as it moves away from ocean ridges.

44. T4 500 Points Answer True Back To Board