1. Volcanoes

2. What is a volcano? An opening in the Earth that erupts gases, ash, and lava. http://www.youtube.com/watch?v=xExdEXOaA9A http://www.youtube.com/watch?v=xExdEXOaA9A

3. Mountains form when layers of lava, ash, and other materials build up around these openings.

4. How are volcanoes formed?

5. Convergent/Destructive volcanoes

6. At convergent/destructive boundaries, one plate subducts (sinks) under the other, the plate melts and magma is forced to the surface. These volcanoes have the most violent eruptions http://www.classzone.com/books/earth_science/terc/content/visualizations/es0902/es0902page01.cfm?chapter_no=visualization

7. Divergent/Constructive volcanoes

8. At divergent/constructive boundaries, plates move apart and magma rises to the surface. Also known as seafloor spreading. These eruptions are not as violent http://www.classzone.com/books/earth_science/terc/content/visualizations/es0903/es0903page01.cfm?chapter_no=visualization

9. Hot Spot

10. Hot Spots Form in the middle of plates. As the plate moves, new volcanoes are created.

11. When the plate moves, the older volcanoes lose their magma source and are now dormant (inactive) http://www.classzone.com/books/earth _science/terc/content/visualizations/es0 904/es0904page01.cfm?chapter_no=vi sualizationhttp://www.classzone.com/books/earth _science/terc/content/visualizations/es0 904/es0904page01.cfm?chapter_no=vi sualization 1 2 21 3

12. Iceland Divergent

13. Geothermal Activity on Iceland

14. Surtsey

15. Natural geothermal pools

16. Geysers and mud pots

17. Hawaii Hot Spot http://www.youtube.com/watch?v=bYv6V 5EJAKc

19. Hot Spot Locations http://mms.nps.gov/yell/ofvec/exhibits/eruption/volcanoes/hotspot3.htm

20. Soufriere Hills in Montserrat Convergent

21. If the Pacific Plate stops moving, what will happed to the Big Island of Hawaii? X

22. It will just keep getting bigger!

23. What destruction can volcanoes cause?

24. Block roadways

25. www.maps.google.com Collapse buildings

26. Lahars Mudslides created by volcanic eruption Heat from volcano melts glaciers on mountain Will usually take out everything in its path

27. Can cause lung disease in animals and humans

28. Ring of Fire -a chain of convergent volcanoes found circling the Pacific Ocean

29. http://www.classzone.com/books/earth_science /terc/content/investigations/es0810/es0810page 01.cfm?chapter_no=investigation How fast do plates move computer investigation http://www.youtube.com/watch?v=-H_HZVY1tT4

30. Volcano Review

31. Where do we find most volcanoes? Near plate boundaries

32. What are the three types of volcanoes? Convergent, divergent, and hot spot

33. What and where is the Ring of Fire A chain of volcanoes circling the Pacific Ocean