Alexis Hague 8.2.2 - Practice: The Yellowstone Supervolcano
alexisg...@gmail.com
Drawn On Paper
2. What are three characteristics of magma that cause a volcano to have a huge eruption? (12 points)
Lava, Gas, & Tephra
3. Volcanoes are able to form in several different plate-tectonic settings.
A. How does a hot-spot supervolcano (such as Yellowstone) form? (5 points)
Ans. 80 Kilometers beneath Earth, 1450 Celsius
B. What type of volcano is Mount Saint Helens? (2 points)
Ans. Mount St. Helens, an active stratovolcano, is of the composite type.
C. How is the formation of this type of volcano different than that of a hot-spot volcano? (3 points)
Ans.Hot spot volcanoes.
4. Most hot-spot volcanoes erupt through oceanic crust.
A. Do these hot-spot volcanoes tend to erupt more explosively than other volcanoes? (5 points)
Ans. The more explosive volcanoes are those with a blocked magma chamber that builds pressure under a solid surface. Hotspot volcanoes tend to be less explosive because most are on the seafloor.
B. What is an example of a hot-spot volcano that supports your answer? (4 points)
Ans. Mount St. Helens
5. Why do oceanic hot-spot volcanoes often form a long line of volcanic islands? (10 points)
Ans. Because the lithospheric ocean plate moves with plate tectonics over the stationary mantle based hot spot, forming a series of volcanoes.
6. The Internet is flooded with information on the Yellowstone supervolcano. What are two characteristics you use to determine if Web sites will have accurate information? (4 points)
Ans. Look at other websites and check a local newspaper.
Ms. Williams
On Sunday, December 9, 2012 10:45:13 PM UTC-5, alexisg...@gmail.com wrote:
1. Draw a diagram of a volcano. Make sure you label the magma chamber, central vent, side vents, and crater. (5 points)Drawn On Paper
2. What are three characteristics of magma that cause a volcano to have a huge eruption? (12 points)Lava, Gas, & Tephra
8 points
3. Volcanoes are able to form in several different plate-tectonic settings.
A. How does a hot-spot supervolcano (such as Yellowstone) form? (5 points)
Ans. 80 Kilometers beneath Earth, 1450 Celsius
B. What type of volcano is Mount Saint Helens? (2 points)
Ans. Mount St. Helens, an active stratovolcano, is of the composite type.
C. How is the formation of this type of volcano different than that of a hot-spot volcano? (3 points)
Ans.Hot spot volcanoes.
4. Most hot-spot volcanoes erupt through oceanic crust.
A. Do these hot-spot volcanoes tend to erupt more explosively than other volcanoes? (5 points)
Ans. The more explosive volcanoes are those with a blocked magma chamber that builds pressure under a solid surface. Hotspot volcanoes tend to be less explosive because most are on the seafloor.
B. What is an example of a hot-spot volcano that supports your answer? (4 points)
Ans. Mount St. Helens
5. Why do oceanic hot-spot volcanoes often form a long line of volcanic islands? (10 points)Ans. Because the lithospheric ocean plate moves with plate tectonics over the stationary mantle based hot spot, forming a series of volcanoes.
10 points
6. The Internet is flooded with information on the Yellowstone supervolcano. What are two characteristics you use to determine if Web sites will have accurate information? (4 points)Ans. Look at other websites and check a local newspaper.
1 point