volcanoes
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Volcanoes. Part A What are volcanoes?. What is a Volcano?. Hot Lava. Cold Rock. ACTIVE. Z. Z. z. DORMANT. EXTINCT. Mountains that erupt lava. Hawaii. Activity. What helps make explosive eruptions ?. Making a Volcanic Eruption You will need: 2 litre bottle of soda or cola - PowerPoint PPT PresentationTRANSCRIPT
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Hawaii
Z zZ
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• Explain to your Talk Partner or group why the bottled exploded.
• Maybe a diagram would help?
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USGS/Hawaiian Volcano ObservatoryPhoto by J.D. Griggs
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vent
cone
magma chamber
Pipe
(Conduit)
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Cold Crust
Ocean
Hot Melt
Hot Mantle
CoolerMantle
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magma magma
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Hawaii
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Courtesy of www.swisseduc.ch
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RoughLots of pieces
Smooth or Ropy
Courtesy of A. Rust
Courtesy of A. Rust
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Danger to People, Places and Things
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What could the hazards be when a volcano erupts?
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USGS/Cascades Volcano ObservatoryPhoto by David Wieprecht
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Courtesy of Swisseduc.ch
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3kmN
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What is a volcano? Mountains that erupt .
A dormant volcano is: awake asleep ________ chamber
V____
Conduit
Cone
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 lava burn trees and houses?
Do effusive volcanoes have runny or sticky lava? .
l a v a
x p l o s i v e
b u b b l e s
a s h
r u n n y
yes
e n t
M a g m a
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