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TRANSCRIPT
CALDERA VOLCANOES
By: Patrick Haddad James Wilson HarshawVDanielle Pusillo Volcano.mp3
Caldera History
Askja, in Iceland is a famous Caldera. The Crater at its center is 220 meters deep It is an active volcano; it last erupted in 1961
Caldera Facts
Caldera volcanoes start out as Composite volcanoes.
Every eruption decreases its mass Caldera volcanoes exist on other planets
Caldera Parts
Caldera Volcano Questions
How many active volcanoes are there on our planet?
‐1500 active volcanoes
How do volcanoes decrease global temperatures?
‐Volcanoes decrease global temperature because sulfur dioxide is thrust into the air and it hinders the sunlight.
How can some volcanoes increase global temperatures?
‐They release a lot of carbon dioxide that play a greenhouse effect on the earths atmosphere.
Bibliography:
Works Cited britannica. N.p., n.d.Web. 27 Oct. 2010.
<http://www.britannica.com/ facts/ 11/ 1025185/ caldera‐as‐discussed‐in‐volcano>. farlex. N.p., n.d.Web. 27 Oct. 2010.
<http://encyclopedia.farlex.com/ Caldera+volcano>. Museumstuff. N.p., n.d.Web. 25 Oct. 2010.
<http://www.museumstuff.com/ learn/ topics/ Askja>. tetonwyo. N.p., n.d.Web. 27 Oct. 2010.
<http://www.google.com/ imgres?imgurl=http://tetonwyo.org/ em/ docs/ images/ volcano_diagram_usgs.gif&imgrefurl=http://tetonwyo.org/ AgencyTopic.asp%3FtopicID%3D201723&h=390&w=335&sz=18&tbnid=TuNcFtj3itpB2M:&tbnh=242&tbnw=208&prev=/ images%3Fq%3Dcaldera%2Bvolcano%2Bdiagram&zoom=1&q=caldera+volcano+diagram&hl=en&usg=__jqxEpIqxBwQcE1OraSeT_yIqx30=&sa=X&ei=qVLITJy5OIL58AaG24Eb&ved=0CBkQ9QEwAA>.
usgs. N.p., n.d.Web. 25 Oct. 2010. <http://pubs.usgs.gov/ dds/ dds‐40/ images/ JPG/ large_screen/ fig05.jpg>.