1. 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 Vocab I Vocab II Vocab IIIContent IContent II

2. Hypothesis

3. An educated guess

4. Divergent Plate Boundary

5. Place where 2 places are pulling apart from each other

6. Rift Valley

7. Large hole caused by sea floor spreading

8. Subduction

9. When ocean crust collides with continental crust and gets pushed down

10. Convergent Plate Boundary

11. Place where 2 plates push together and collide

12. A crack in the earth, where earthquakes can happen

13. Fault

14. When plates build up energy and quickly release it, usually causing an earthquake

15. Elastic Rebound

16. The point of origin of an earthquake

17. Focus

18. The point on the earths surface directly above the focus

19. Epicenter

20. A boundary that marks a change in Density between layers

21. Discontinuity

22. Shadow Zone

23. Area on the earth where no seismic waves are recorded. A dead zone

24. The layer of the mantle where lithosphere plates move

25. Asthenosphere

26. Steep sided volcanoes with large fragments of solid material

27. Cinder Cone

28. Volcano with Alternating layers

29. Composite

30. Viscosity

31. A measurement of a liquids resistance to flow. Think of a thick milk shake

32. What is an earthquake

33. Shaking and vibrating of the earths crust

34. Which wave can only travel through Solids?

35. S waves

36. What is another term for earthquake waves

37. Seismic waves

38. These waves are the slowest moving waves, but cause the most destruction

39. Surface waves

40. How do you determine how close you are to the epicenter of a quake?

41. Measure the difference in arrival of the P waves and S waves

42. Define Magma

43. Molten rock underground

44. Define Lava

45. Magma that reaches the earths surface

46. What does the Mercalli scale measure

47. The amount of damage an earthquake causes

48. What does the Richter scale measure?

49. The amplitude of an earthquake

50. What is a hot spot?

51. A place where lots of volcanoes are