1. Ch.3: Volcanoes and the Rock Cycle Lesson 3: The causes and prediction of Volcanic Eruptions

2. Active/Dormant Volcanoes

4. Hot Spots

5. Question #1 Pressure Non-explosive (shield or cinder-cones) (Magma comes from the upper mantle, which has a low to medium viscosity and low to medium gas.)

6. Question #2 Temperature Non-explosive (shield or cinder-cone) (Magma comes from deeper in the mantle and tends to have low viscosity.)

7. Question #3 Water Melting point (Subducting crust is oceanic, and so the rock is well hydrated with water, which is released as vapor during subduction.)

8. Question #4 Explosive (composite or cinder-cone) 80%

9. Question #5 Pacific Ring of Fire (Most coastlines along the Pacific are within subduction zones except for California.)

10. The Ring of Fire

11. Hot Spots

12. Question #6 15 % (most located in Iceland and Eastern Africa). 5 % (most form islands such as Hawaii, Easter isles, Galapogos, Canary, Tahiti, etc.) –Note: a single hot spot can form multiple islands as the plate moves over it. –Bill Nye volcano (3:28)Bill Nye volcano (3:28)

13. Question #7 Extinct Active Dormant (sleeping)

14. Question #8 Earthquakes Frequency and intensity

15. Question #9 Volcanic gases Sulfur dioxide (SO2) to Carbon dioxide (CO2). Increase

16. Question #10 Swell or bulge. Tiltmeter Tiltmeters bounce laser beams off reflectors positioned on the mountain that can measure a few milimeters of ground movement.

17. Question #11 Infrared temperature

18. Infrared Satellite image