You have new items in your feed. Click to view.
Question and answer
Question not found
Ask a question
Not a good answer? Get an answer now. (Free)
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
If the magma within a volcano contains a high amount of silicon and few gas bubbles, this volcano will more than likely erupt in which of the following ways. a. Violently, giving residents in surrounding areas little time to evacuate. c. Violently, but with many warning signs of its eruption. b. Non-violently, with slow moving lava. d. Non-violently, but the lava that will be flowing out of the volcano will be fast moving and affect a large surrounding area.
Weegy: Gas vents from Kilauea Volcano in Hawaii Photo courtesy USGS Magma Eruptions Volcanoes vary a great deal in their destructive power. [ Some volcanoes explode violently, destroying everything in a mile radius within minutes, while other volcanoes seep out lava so slowly that you can safely walk all around them. The severity of the eruption depends mostly on the composition of the magma. The first question to address is: why does the magma erupt at all? The erupting force generally comes from internal gas pressure. The material that forms magma contains a lot of dissolved gases - gases that have been suspended in the magma solution. The gases are kept in this dissolved state as long as the confining pressure of the surrounding rock is greater than the vapor pressure of the gas. When this balance shifts and vapor pressure becomes greater than the confining pressure, the dissolved gas is allowed to expand, and forms small gas bubbles, called vesicles, in the magma. This happens if one of two things occurs: The confining pressure decreases, due to decompression from the magma rising from a higher pressure point to a lower pressure point. The vapor pressure increases because the magma cools, initiating a crystallization process that enriches the gas content of the magma. In either case, what you get is magma filled with tiny gas bubbles, which have a much lower density than the surrounding magma, and so push out to escape. This is the same thing that happens when you open a bottle of soda, particularly after shaking it up. When you decompress the soda (by opening the bottle), the tiny gas bubbles push out and escape. If you shake the bottle up first, the bubbles are all mixed up in the soda so they push a lot of the soda out with them. This is true for volcanoes as well. As the bubbles escape, they push the magma out, causing a spewing eruption. the answer is a. ] (More)
Question
Expert Answered
Asked 12/2/2013 9:32:46 AM
0 Answers/Comments
If the magma within a volcano contains a high amount of silicon and few gas bubbles, this volcano will more than likely erupt in which of the following ways. a. Violently, giving residents in surrounding areas little time to evacuate. c. Violently, but with many warning signs of its eruption. b. Non-violently, with slow moving lava. d. Non-violently, but the lava that will be flowing out of the volcano will be fast moving and affect a large surrounding area.
Weegy: Deep within the Earth it is so hot that some rocks slowly melt and become a thick flowing substance called magma. Because it is lighter than the solid rock around it, magma rises and collects in magma chambers. [ [ [ Eventually some of the magma pushes through vents and fissures in the Earth's surface. A volcanic eruption occurs! Magma that has erupted is called lava. Some volcanic eruptions are explosive and others are not. How explosive an eruption is depends on how runny or sticky the magma is. If magma is thin and runny, gases can escape easily from it. When this type of magma erupts, it flows out of the volcano. Lava flows rarely kill people, because they move slowly enough for people to get out of their way. Lava flows, however, can cause considerable destruction to buildings in their path. If magma is thick and sticky, gases cannot escape easily. Pressure builds up until the gases escape violently and explode. In this type of eruption, the magma blasts into the air and breaks apart into pieces called tephra. Tephra can range in size from tiny ] ] ] (More)
Question
Expert Answered
Asked 12/2/2013 9:37:12 AM
0 Answers/Comments
A Census is taken every how many years? a. 10 c. 50 b. 20 d. 100
Question
Updated 64 days ago|5/22/2016 7:36:10 PM
1 Answer/Comment
A Census is taken every 10 years.
Added 64 days ago|5/22/2016 6:19:08 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by yumdrea [5/22/2016 7:36:02 PM]
25,782,105 questions answered
Popular Conversations
Simplify 15 + 6(x + 1).
Weegy: The answer is x^2 User: Simplify 5(R + 2) - 6. User: Simplify 5(R + 2) - 6. User: 5(R + 2) - 6. User: ...
7/24/2016 12:56:33 PM| 4 Answers
Where is carbon taken in by plants during photosynthesis stored?
Weegy: Photosynthesis is a process in which green plants use energy from the sun to transform water, carbon dioxide, ...
7/24/2016 5:39:13 AM| 2 Answers
What is the major irony in the poem “Ballad of Birmingham” by Dudley ...
Weegy: Fighting for freedom has consequences. [ is the theme of Ballad of Birmingham? by Dudley Randall ...
7/24/2016 8:13:44 AM| 2 Answers
Ho Chi Minh compared his military to a(n) A. wasp. B. ...
Weegy: Ho Chi Minh compared his military to a: TIGER. User: Which of the following occurred after coalition ...
7/24/2016 9:57:24 AM| 2 Answers
Simplify 5x + 2x + 7x
Weegy: 5x + 2x + 7x = 7x + 7x =14x User: Simplify -10x - 2x + 3x. Weegy: -10x - 2x + 3x = -12x + 3x = -9x ...
7/24/2016 12:50:20 PM| 2 Answers
Weegy Stuff
S
P
L
Points 525 [Total 1275] Ratings 1 Comments 515 Invitations 0 Offline
S
Points 206 [Total 627] Ratings 1 Comments 196 Invitations 0 Offline
S
P
Points 203 [Total 462] Ratings 1 Comments 193 Invitations 0 Offline
S
L
P
P
P
Points 167 [Total 2915] Ratings 0 Comments 167 Invitations 0 Offline
S
Points 88 [Total 227] Ratings 0 Comments 88 Invitations 0 Offline
S
L
P
P
P
Points 57 [Total 3761] Ratings 0 Comments 57 Invitations 0 Offline
S
Points 11 [Total 61] Ratings 1 Comments 1 Invitations 0 Offline
S
1
L
L
P
R
P
L
P
P
R
Points 8 [Total 12606] Ratings 0 Comments 8 Invitations 0 Offline
S
L
Points 3 [Total 1766] Ratings 0 Comments 3 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.