1. What is the outermost layer of the Earth called?

2. Answer: The lithosphere

3. What is the densest layer of the Earth?

4. Answer: The inner core

5. What layer of the Earth is the hottest?

6. Answer: The inner core

7. Which layer of the Earth is liquid?

8. Answer: The outer core

9. Which layer of the Earth consists mostly of iron?

10. Answer: The inner core

11. What happens to the density of Earth as you move from the crust to the core?

12. Answer: The density increases with depth

13. Where are the lithospheric plates located?

14. Answer: The crust and upper mantle

15. What causes convection currents in the asthenosphere?

16. Answer: The rising of less dense magma and the sinking of more dense magma

17. As you move away from the mid-ocean ridge, what happens to the age of the rocks?

18. Answer: The rocks get older as you move away from the mid-ocean ridge

19. At what type of plate boundary does sea-floor spreading occur?

20. Answer: Divergent plate boundary

21. Where do mid-ocean ridges form? Hint: What type of plates and what do they do?

22. Answer: They form where two oceanic plates move apart

23. What did Alfred Wegener’s hypothesis state?

24. Answer: The continents were once part of one large landmass the over time broke into pieces and drifted to their present location.

25. What forms when two continental plates collide?

26. Answer: Mountains form

27. If you know where lithospheric plates meet, then what can you predict?

28. Answer: You will be able to predict where an earthquake might occur

29. What do you call the breaking down of rock?

30. Answer: Weathering

31. What do you call the movement of a sediment from one place to another?

32. Answer: Erosion

33. When does chemical weather occur most rapidly?

34. Answer: It occurs fastest in warm, humid climates.

35. What type of weathering is acid rain an example of?

36. Answer: Chemical weathering

37. Wind and water are the main causes of what type of weathering?

38. Answer: Mechanical weathering