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What else can I help you with?
Do gases escape from a low silica magma easier than it does a high silica magma?
yes
What type of magma is fluid and allows gases to escape?
basalt lava
Why is silica rich magma explosive?
This is because silica-rich magma is thicker. The thicker the magma, the chance for the dissolved gas in there to escape is less likely. This causes an explosion. When the gases do escape, they cause an even bigger explosion
How does magma with lots of silica trap gases?
Magma with high silica content is more viscous, which can trap gases within the molten rock. The high viscosity makes it harder for gases to escape to the surface, allowing them to build up pressure until they eventually erupt explosively.
The volcanoes of Hawaii form fron thin basaltic magma that tends to erupt quietly What is one reason for the quiet eruptions?
Basaltic magma allows dissolved gases to bubble upward and escape
What type of magma causes quiet eruption?
Magma with low viscosity, such as basaltic magma, typically causes quiet eruptions. This type of magma flows easily and allows gases to escape, resulting in relatively gentle eruptions with less explosive activity.
What kind of magma produce violent volcanoes eruptions?
Rhyolitic magma. This type of magma is found where the gases can't escape like in volcanic eruptions. Because the gas can not escape, the magma becomes viscous, resulting in the explosions being violent and unpredictable. The other type of magma is Basaltic magma. This can be found where continent plates are pulling away from each other and the magma is nearer the surface. This allows the gas to escape and therefore the magma is less viscous and doesn't result in explosive volcanoes, here eruptions are gentle and 'rifts' are more likely, where lava is persistent. I hope this helps! :)
What causes a magma to be less viscous?
The main cause of an explosive volcano is the amount of gases trapped in the magma. If the gases have had time to escape, there will be less pressure built up resulting in a less vicious magma explosion.
When magma reaches the surface what happens to the gases?
When magma reaches the surface, the gases dissolved in the magma are released due to the decrease in pressure. This release of gases can lead to explosive volcanic eruptions as the gases expand rapidly and forcefully.
Describe how differences in magma affect volcanic eruptions?
It depends on the texture of the magma, if it is thick then it won't let the gases escape, and if it is liquidy then the gases will escape resulting in a nonexplosive eruption. If the magma is high in silica and water then it will be thick If the magma is low or has no silica or water then it will be liquidy. - Negehna 6th Grade
What is the definition of a fumarole?
These are vents through which volcanic gases and water vapour escape to the earth's surfaec.Fumaroles are formed when magma heats underground water,it mixes with volcanic gases and the mixture is eventually released as steam.
How does the magma type influence the volcanos explosivity?
The type of magma significantly influences a volcano's explosivity due to its viscosity and gas content. Magma that is high in silica, such as rhyolitic magma, tends to be more viscous, trapping gases and leading to explosive eruptions when pressure builds up. In contrast, basaltic magma, which is lower in silica and more fluid, allows gases to escape easily, resulting in less explosive, effusive eruptions. Thus, the composition of the magma directly affects the eruption style and intensity.
