Volcanoes Volcanoes Becca HansenBecca Hansen

EDU 290 8am-9:15amEDU 290 8am-9:15am

What are volcanoes?

Volcano: A mountain where magma erupts from the earth’s surface

Why do volcanoes form?

Plate tectonics: Huge pieces of the Earth’s crust

Plates slide along the mantle

Plates move and collide with other plates One plate pushed under another

Mountain is formed

Where volcanoes form

Fault lines

Hot spots

Ring of fire

Types of volcanoes Types:

Active

Dormant

Extinct

Shapes: Composite Volcano

Cinder Cone Volcano

Shield Volcano

Types of volcanoes

Why volcanoes erupt Rocks melt within the earth

Magma rises through vents in earth

Explosive vs. Calm eruption Thin magma = calm eruption

Thick magma = violent eruption

Volcanic eruptions http://video.nationalgeographic.com/video/pl

ayer/environment/environment-natural-disasters/volcanoes/volcano-eruptions.html

Lava vs. Magma Magma: Liquid rock within a volcano

Lava: What magma is called after it exits the volcano

http://video.nationalgeographic.com/video/player/environment/environment-natural-disasters/volcanoes/volcano-lava.html

Famous volcanoes Pompeii (Mt. Vesuvius)

Mount St. Helen

Hawaii

Pompeii

Mount St. Helen

Hawaii

Fun facts! “Volcano” from the name “Vulcan” the

Roman god of fire.

Mauna Loa, in Hawaii, is the largest active volcano

Volcanoes release pressure from within the earth

1,510 active volcanoes 80 are underwater

ReferencesInformation on volcanoes found at:

http://www.cotf.edu/ete/modules/volcanoes/vtypesvolcan1.html

http://www.ussartf.org/volcanoes.htm

http://www.woodlands-junior.kent.sch.uk/Homework/mountains/volcanoes.htm

Pictures found at:

http://www.cotf.edu/ete/modules/volcanoes/vtypesvolcan1.html

http://elainem2016.edublogs.org/2011/01/26/pompeiimt-vesuvius/

http://velvetescape.com/2009/10/plane-views-mt-vesuvius-italy/

http://www.documentingreality.com/forum/f181/1980-eruption-mount-st-helens-washington-state-usa-may-1980-a-50484/

http://brainz.org/news/43-earthquake-rattled-mt-st-helens-area-monday/5281/

http://www.mainarticleidea.net/hawaii-volcanoes/

http://www.galapagosonline.com/Galapagos_Natural_History/Geology/Hot_Spots.htm

http://virgil.org/dswo/fs/japantour/iwojima.htm

Videos found at:

http://video.nationalgeographic.com/video/player/environment/environment-natural-disasters/volcanoes/volcanoes-101.html