2. 15 20 25 510 Is Mt. Hood active and in danger? Past violent eruptions Lahars on Mt. Hood Mt. Hood Today Example s of Mts. 5 5 5 5 10 15 20 25 20 Team One Team Two Team Three Team Four Team Five Team Six

3. Topic 1 How far away is Portland from the summit of Mount Hood? Show Answer

4. Topic 1 We are 50 miles away from the summit of Mount Hood. Back to Board

5. Topic 1 Mt. Hood has a history of what kind of eruption? Gentle or violent?? Show Answer

6. Topic 1 Mt. Hood has a history of gentle eruptions. Back to Board

7. Topic 1 How far can lava flows travel from the crater? Show Answer

8. Topic 1 Lava flows can travel between 6 to 8 miles from the crater. Back to Board

9. Topic 1 What kind of mountain is Mt. Hood? A cinder, composite, or shield? Show Answer

10. Topic 1 Mt. Hood is a composite cone. Back to Board

11. Topic 1 How do we know that Mt. Hood is active? Also what is the name when there is rising steam? Show Answer

12. Topic 1 We know that Mt. Hood is active by the smell of sulfur that is also associated with volcanoes and the rising steam called fumaroles. Back to Board

13. Topic 2 When did the north flank and summit collapse? Show Answer

14. Topic 2 The north flank and summit collapsed about 100,000 years ago. Back to Board

15. Topic 2 What side is Timberline Lodge on? Show Answer

16. Topic 2 Timberline Lodge is on the south side of the mountain. Back to Board

17. Topic 2 In the 100,00 year ago eruptions what huge lahar swept down the Sandy or Hood River? Show Answer

18. Topic 2 The huge lahar swept down the Hood River. Back to Board

19. Topic 2 How thick was the debris from the 100,000 year ago eruption? What is it equivalent to? Show Answer

20. Topic 2 The debris was 40 feet thick and it is equivalent to a 4 story building. Back to Board

21. Topic 2 Since the lahar was so big what did it do to the Columbia River? Show Answer

22. Topic 2 The lahar pushed the Columbia river northward. Back to Board

23. Topic 3 If lava doesnt flow down the mountain side it will build up around the vent and create a what? Show Answer

24. Topic 3 It will create a lava dome that is hundreds of feet tall. Back to Board

25. Topic 3 What is the reason to the precious question? Show Answer

26. Topic 3 Because the lava is thick. Back to Board

27. Topic 3 What is the name of the lava dome we see from the Timberline Lodge side? Show Answer

28. Topic 3 The lava dome on the Timberline Lodge side is called Crater Rock. Back to Board

29. Topic 3 How many years ago was Crater Rock formed? Show Answer

30. Topic 3 Formed 200 years ago. Back to Board

31. Topic 3 When these lava domes collapse, eruptions occur that release hot gases and ash called? Show Answer

32. Topic 3 Called a pyroclastic flow. Back to Board

33. Topic 4 Where are the fumeroles on Mt. Hood? Show Answer

34. Topic 4 Fumeroles are near Crater Rock. Back to Board

35. Topic 4 If Mt. Hood experiences an eruption today it would mostly be similar to what year? Show Answer

36. Topic 4 It would be similar to the 200 year ago eruption. Back to Board

37. Topic 4 If Hood does become more active, it will be in what form? Show Answer

38. Topic 4 It would be in the form of lava dome build up. Back to Board

39. Topic 4 What do pyroclastic flows do? Show Answer

40. Topic 4 Pyroclastic flows will melt glaciers and produce lahars. Back to Board

41. Topic 4 How many earthquake swarms does Hood experience? Show Answer

42. Topic 4 Experiences between 1 to 3 a year. Back to Board

43. Topic 5 What kind of cone is Mauna Loa and why? Show Answer

44. Topic 5 Mauna Loa is shield cone because it is made up of thin lave Back to Board

45. Topic 5 What is the best description of a shield volcano? Show Answer

46. Topic 5 Best description is broad and flat. Back to Board

47. Topic 5 What is an example of a cinder cone? Show Answer

48. Topic 5 Example would be Paracutin. Back to Board

49. Topic 5 Vesuvius is a example of what kind of cone? Show Answer

50. Topic 5 Example of a composite cone. Back to Board

51. Topic 5 What is the most common volcano in the Cascade Range? Show Answer

52. Topic 5 Most common is composite cones. Back to Board

53. Show Question

54. Big Points What are positive aspects of volcanoes? List all of them. Show Answer 302928272625242322212019181716151413121110987654321

55. Big Points 1. Sulfur in rubber 2. Abrasive 3. Construction materials 4. New land 5. Brings carbon dioxide up from the ocean floor 6. Preserves history 7. Rich soil 8. Gold and diamonds 9. Sulfur in explosives 10. Sulfur based drugs Back to Board

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