1. Turn in... 6-1 R/R

2. Warm-Up List the 3 causes of volcanoes. Be prepared to describe each.

3. Volcanic Activity Section 9-2

4. Anatomy of a Volcano Magma Chamber Pipe Vent Side Vent Crater Lava Flow

5. Factors affecting eruption Why does this soda “erupt”? Video #1 Video #2

6. Dancing Raisins Try whole raisins. Try raisins cut in ½. Try different beans. Pour liquid into strainer in rear sink. Return pan of materials to the front.

7. Dancing Raisins Why do the Raisins dance?

8. Factors affecting eruption #1. amount of gas dissolved in magma ↑ gas content = ↑ force of eruption

11. #2. temperature ↑ temperature = ↑ flow-y

12. Very hot, liquidy

13. Cooler, less flow-y

14. Factors affecting eruption #3. amount of silica in magma Silica = thicker lava

15. Lava with lots of silica. THICK! – the rock builds up

17. Lava without lots of silica. THIN and runny!

19. List 3 factors which affect a volcanic eruption. Which one is hardest for you to remember? How can you compensate for that?