volcanoes
DESCRIPTION
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
Hawaii
Z zZ
• Explain to your Talk Partner or group why the bottled exploded.
• Maybe a diagram would help?
USGS/Hawaiian Volcano ObservatoryPhoto by J.D. Griggs
vent
cone
magma chamber
Pipe
(Conduit)
Cold Crust
Ocean
Hot Melt
Hot Mantle
CoolerMantle
magma magma
Hawaii
Courtesy of www.swisseduc.ch
RoughLots of pieces
Smooth or Ropy
Courtesy of A. Rust
Courtesy of A. Rust
Danger to People, Places and Things
What could the hazards be when a volcano erupts?
USGS/Cascades Volcano ObservatoryPhoto by David Wieprecht
Courtesy of Swisseduc.ch
3kmN
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