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
22,003,731 questions answered
Popular Conversations
Locate the verbal in the following sentence and identify its ...
Weegy: Check the turkey to see if it is done. Infinitive: To see; Use: Adverb. User: Locate the infinitive and ...
9/3/2015 4:37:24 PM| 4 Answers
A solution should be _____ in order to prevent water gain or water ...
Weegy: If an animal cell shrinks, it was probably placed in a hypertonic solution. User: The fourth level of cell ...
9/3/2015 8:31:00 AM| 3 Answers
Fishing is the leading industry in ...
9/3/2015 9:21:23 AM| 2 Answers
As a sales person for Tan's Bakery, Yolanda is paid a straight ...
Weegy: Yolanda's total gross pay is $12,741.3. It is where 5.3% of $12,100 is $641.3, then add it to $12,100, resulting ...
9/3/2015 11:43:02 AM| 2 Answers
4x3 – 3x2 + x + 3x3
Weegy: x=4
9/3/2015 12:54:05 PM| 2 Answers
A person suffering from schizophrenia loses contact with reality.
Weegy: What is your question?
9/3/2015 2:13:49 PM| 2 Answers
Locate the complete adjective phrase and the noun modified. I heard ...
Weegy: Please indicate the sentence so I can give you the answer. Thanks! User: Locate the complete adjective phrase ...
9/3/2015 4:46:53 PM| 2 Answers
In a short story, any pronoun that indicates a person or thing spoken ...
Weegy: In a short story, any pronoun that indicates a person or thing spoken of is given in the third person. ] ...
9/3/2015 6:14:06 PM| 2 Answers
Weegy Stuff
S
1
L
L
P
R
Points 149 [Total 9472]| Ratings 0| Comments 149| Invitations 0|Online
S
L
L
P
1
Points 122 [Total 9432]| Ratings 1| Comments 112| Invitations 0|Offline
S
Points 79 [Total 384]| Ratings 0| Comments 79| Invitations 0|Offline
S
Points 49 [Total 833]| Ratings 0| Comments 49| Invitations 0|Offline
S
Points 39 [Total 572]| Ratings 0| Comments 39| Invitations 0|Offline
S
Points 32 [Total 32]| Ratings 1| Comments 12| Invitations 1|Offline
S
Points 24 [Total 29]| Ratings 1| Comments 4| Invitations 1|Offline
S
Points 20 [Total 208]| Ratings 0| Comments 20| Invitations 0|Offline
S
Points 11 [Total 67]| Ratings 0| Comments 11| Invitations 0|Online
S
Points 10 [Total 10]| Ratings 0| Comments 0| Invitations 1|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2015 Purple Inc.