1. Warm-Up: Wed 2/19 Write What You Know!
Write everything you know about the prompt below for five minutes, try for at least 3-4 complete sentences.
Describe where the Ring of Fire is geographically (name the oceans, continental coasts, etc).

3. Volcanoes & Plate Tectonics Notes
2/19/2014
Major Key Term
definition in own words
Key Term
definition in own words
facts
pictures
Key Term

4. What’s a Volcano?
Volcano: weak spot in the crust where molten material (magma) comes to the surface

5. Magma vs Lava
Magma: molten material including rock-forming substances, gases, and water from the mantle (it is underground)
Lava: when magma reaches the surface. Lava can be molten (liquid) or rock (solid)

6. Volcanoes & Plate Boundaries
Like earthquakes, volcanoes can form anywhere but most form along:
Ring of Fire: area of severe earthquakes and volcanoes surrounding the Pacific Ocean

7. Plate Boundaries
Divergent: lava from the mantle erupts directly onto the surface (mid-ocean ridges, rift valleys)
Convergent: forms volcanic belts and island arcs
Subducted plate melts in the mantle (including ocean water)
Magma rises through crust, melting and adding crustal rocks

8. Hot Spots
Hot Spot: a spot where a plume of magma rises and burns a hole in the crust
Can form island chains (Hawaii)
Can form supervolcanoes (Yellowstone)