1. VOLCANOES

2. Aim, Learning Target & Agenda  Aim:  What are the charactistics of the earth that explain volcanoes?  Learning Target:  I can explain what characteristics of Earth’s structure cause volcanoes  Agenda  Do Now  Lesson & Demos  Practice

3. Do Now  How do the plate boundaries relate to volcanoes?

4. Volcanoes are located on plate boundaries  Which type of plate boundaries in particular? (check out your ref table... )  (look at the key)  FIND THE INDIAN AUSTRALIAN AND THE PACIFIC PLATE

5. Online demo  http://teachertube.com/viewVideo.php?video_id= 261126&title=Convection_Currents

6. What just happened?  Write a 2 sentence description of what happened  The red, which represented the hot water, rose and the blue, which represented the cold water stayed on the bottom

7. Why would water move like that?  Think, Pair, Share  (think and jot down notes)  (pair up with a neighbor and discuss)  Share out with the class

8. Convection current (Review)  A fluid current set in motion by differenecs in density within the fluid

9. IV. Volcanoes A. Volcanic Regions on Earth Ring of Fire = region of volcanoes that encircle the Pacific Ocean

10. B. Causes of Volcanic Activity 1. Plate Boundaries – island arc volcanoes (Aleutians), subduction (Cascades, Andes)

11. 2. Hot Spots – Hawaiian IslandsHot Spots a.Kaui4 my b.Oahu 2.5 my c.Molokai1.5 my d.Maui1 my e.HawaiiO.8 my

12. Mount St. Helens, Washington

13. D. Volcanic Features 1. 9. 8. 7. 6. 5. 4. 3. 2. Neck

14. Volcanoes Videos D:\ #17  http://dsc.discovery.com/video-topics/other/other- topics-volcano-videos.htm