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 322 days ago|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 322 days ago|12/2/2013 9:37:12 AM
0 Answers/Comments
17,894,557 questions answered
Popular Conversations
3x+3/18x= User: 10x+3/=
Weegy: this is quite simple, if you read over the question a few times and learn the tendencies. One number is ten ...
10/20/2014 5:27:08 PM| 5 Answers
Which value for x makes the sentence true? 8x = 3x 30
Weegy: 8x - 20 = 3x + 5; 8x - 3x = 5 + 20; 5x = 25; x = 25/5; x = 5 User: 7x - 5 = 3x + 11 Weegy: 8x + 3 = 7x - ...
10/20/2014 7:11:38 AM| 2 Answers
Which value for x makes the sentence true? 8x = 3x + 20
Weegy: 8x - 20 = 3x + 5; 8x - 3x = 5 + 20; 5x = 25; x = 25/5; x = 5 User: Which value of x makes the following ...
10/20/2014 7:16:30 AM| 2 Answers
Which value of x makes the following equation true? 3(x - 3) = -2x ...
Weegy: 6(x - 2) = -2x + 28 6x - 2 = -2x + 28 6x - 12 = 28 + 2x 8x - 12 = 28 8x = 28 + 12 8x = 40 x = 40/8 x = ...
10/20/2014 7:18:42 AM| 2 Answers
After the auditorium filled up,we seated about fifty people on the ...
Weegy: After the auditorium filled up, we seated about fifty people on the stage. The sentence structure is: ...
10/20/2014 9:35:49 AM| 2 Answers
When particles are moving between two phases and no net change in the ...
Weegy: When particles are moving between two phases and no net change in the amount of either phase occurs, ...
10/20/2014 10:33:23 AM| 2 Answers
Is the example a complete sentence, sentence fragment, or run-on ...
Weegy: The bird dove swiftly then it landed gently on the branch. This is B. Complete sentence. User: Is the example ...
10/20/2014 10:38:45 AM| 2 Answers
Weegy Stuff
S
L
1
1
1
1
L
1
L
Points 2160 [Total 14535]| Ratings 0| Comments 2160| Invitations 0|Offline
S
L
1
L
P
C
1
P
C
1
L
Points 1393 [Total 10874]| Ratings 3| Comments 1363| Invitations 0|Offline
S
1
L
1
L
P
P
L
Points 752 [Total 12981]| Ratings 0| Comments 752| Invitations 0|Offline
S
L
Points 473 [Total 1872]| Ratings 0| Comments 473| Invitations 0|Offline
S
1
L
L
Points 455 [Total 6249]| Ratings 3| Comments 425| Invitations 0|Offline
S
Points 401 [Total 401]| Ratings 0| Comments 371| Invitations 3|Offline
S
Points 319 [Total 320]| Ratings 3| Comments 289| Invitations 0|Offline
S
Points 197 [Total 197]| Ratings 1| Comments 187| Invitations 0|Offline
S
P
C
L
P
L
1
Points 48 [Total 6282]| Ratings 0| Comments 48| Invitations 0|Offline
S
Points 27 [Total 27]| Ratings 0| Comments 27| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.