Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Transcript of Volcanoes!
2. An opening in the Earth's crust from which lava, ash, and hot gases flow or are ejected during an eruption. There are more than 500 active volcanoes in the world. More than half of these volcanoes are part of the "Ring of Fire," a region that encircles the Pacific Ocean. Fun
Facts http://news.discovery.com/earth/volcano-eruption-iceland-big-pic.html 80% of eruptions occur underwater. These are pictures from the eruption of Iceland's Eyjafjajokull Volcano. April 7th, 2010 Aurora Full Moon The name "volcano" has its origin from the name of Vulcan, a god of fire in Roman mythology. Fresh lava ranges from 1,300° to 2,200° F The Earth's crust is made up of huge slabs called plates, which fit together like a jigsaw puzzle. These plates sometimes move.
Between the Earth's crust and the mantle is a substance called magma which is made of rock and gases.
When two plates collide, one section slides on top of the other, the one beneath is pushed down. Magma is squeezed up between two plates. What causes an eruption? http://www.woodlands-junior.kent.sch.uk/Homework/mountains/volcanoes.htm