2. Hawaii Z z Z

3. Measuring the temperature Heat suit USGS photo by R.L. Christiansen Jan.9, 1973

4. vent cone magma chamber conduit

6. A look inside the Earth Mantle Outer Core Inner Core Crust

7. A look at the mantle and crust

8. Cold Crust Ocean Hot Melt Hot Mantle Cooler Mantle

9. magma

10. Hawaii

11. Courtesy of www.swisseduc.ch

12. Rough Lots of pieces Smooth or Ropy Courtesy of A. Rust

13. World map of volcanoes erupted within the past 10,000 years Courtesy of Smithsonian Institution Global Volcanism Program

16. USGS/Hawaiian Volcano Observatory Photo by J.D. Griggs

17. Danger to People, Places and Things

18. Fast flowing rocks! Bent bars of a broken house. Which way did the flow go?

22. USGS/Cascades Volcano Observatory Photo by David Wieprecht

23. Courtesy of Swisseduc.ch

26. Examples from Past and Present Courtesy of www.swisseduc.ch

27. Vesuvius, Italy – 79AD Explosive Ash and flows covered Pompeii

28. Excavations cc. Crew Creative cc. of Crew Creative

29. Plaster casts of bodies

30. Vesuvius today Naples

31. Mt. Pelée, Martinique - 1902

32. Photo by Angelo Heilprin

33. Vestmannaeyjer, Iceland - 1973

34. Lava flows caught people by surprise

35. Spraying seawater to slow or stop lava flows

36. What can we do to help people who live near active volcanoes? Mt. St. Helens

38. Volcano Observatories on Active Volcanoes

39. Ground bulging or popping up magma tiltmeter

40. Earthquakes

41. Gas or Bubbles

43. What is a volcano? Mountains that erupt. A dormant volcano is:awake asleep ________ chamber V____ Conduit Cone What is lava and magma? m + bubbles + crystals Why do volcanoes erupt? Hot magma wants to go: up down How do volcanoes erupt? Two types: e and effusive. Explosive volcanoes erupt a lot of into the air. What helps make explosive volcanoes erupt?. Can you outrun a pyroclastic flow? Can lava burn trees and houses? Do effusive volcanoes have runny or sticky lava?. l a v a e l t x p l o s i v e b u b b l e s a s h r u n n y yes no e n t M a g m a

44. 3km N

45. Real-Life Scenario Courtesy of www.swisseduc.ch