1. 3.1 Volcanoes
& Plate Tectonics p
3.2 Properties
Of Magma p
3.3 Volcanic
Eruptions p
3.4 Volcanic
Landforms p
3.4 Volcanic
Landforms
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2. Volcanic belts form along the _____________of Earth’s plates.

3. boundaries

4. The formation of the Hawaiian Islands is one example of volcanoes forming over a___________

5. Hot spot.

6. Before lava reaches the surface, the molten material is called

7. magma.

8. The volcanoes along converging oceanic plate boundaries may form

9. an island arc.

10. Volcanoes that form along a mid-ocean ridge occur at a(n)_________________.

11. diverging plate boundary.

12. The viscosity of magma depends upon its silica content and its

13. temperature.

14. __________is fast-moving, hot lava.

15. Pahoehoe

16. The major ingredient of magma is __.

17. Silica.

18. What can be used to identify a substance or to predict how it will behave?

19. physical and chemical properties

20. The greater the viscosity of a liquid, the _____ it flows.

21. slower

22. The long tube in the ground that connects the magma chamber to Earth’s surface is called the _________________.

23. pipe.

24. If a volcano’s magma is high in silica, the volcano will probably _________.

25. erupt explosively.

26. Which of the following volcano hazards is made up of rocky particles about the size of a grain of sand?

27. volcanic ash

28. The main hazard from a quiet volcanic eruption is ______.

29. lava flows.

30. Which type of rock would you expect to form as the result of an explosive eruption?.

31. pumice

32. When groundwater heated by magma rises to the surface and collects in a natural pool, it is called a
_____________.

33. hot spring.

34. In volcanic areas, groundwater heated by magma is a source of ____

35. geothermal energy.

36. Tall, cone-shaped mountains in which layers of lava alternate with layers of ash are called _____

37. composite volcanoes.

38. When many layers of thin, runny lava build up a high, level area, the result is a _______.

39. lava plateau.

40. What is the landform that forms when a mass of hardened magma is uplifted, causing the layers of rock to bend upward?

41. dome mountain

42. A mass of rock formed when a large body of magma cools inside the crust is called a ________.

43. Batholith.

44. The huge hole left by the collapse of a volcanic mountain is called a ___.

45. caldera.

46. When ash, cinders, and bombs build up in a steep pile around a volcano’s vent, the result is a _______.

47. cinder cone volcano.

48. When magma hardens in a volcano’s pipe, the result will eventually be a landform called a _______.

49. volcanic neck.

50. Magma that forces across rock layers hardens into a _.

51. dike.