1. Volcanoes

2. Where do you find volcanoes?

3. The Ring of Fire!

4. Other places  Volcanoes can also be located  Convergent plate boundaries   Divergent plate boundaries   Within plates   hot spot: area of volcanic activity near the center of lithospheric plates

6. How are volcanoes and plate boundaries related?

8. What is a volcano?  A volcano is an erupting vent through which rock, gases, ash and other materials from earths surface are released or erupted.

9. Magma vs Lava?

10. Magma vs Lava Magma  Molten rock inside the earth Lava  Magma that has emerged onto the earths surface

13. Viscosity  Viscosity is a fluid’s resistance to flow  high viscosity = _____ resistance to flow  honey is ___________ viscous than water

14. Viscosity  Viscosity is determined by silica content and temperature  The higher the silica content, the higher the viscosity  The hotter the magma, the lower the viscosity

15. Types of Volcanoes  Different types of volcanoes are catagorized based on the viscosity of the magma.  Types of Volcanoes  Shield  Composite  Cinder cone