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How does magma get pushed through a vent?
Magma gets pushed through a vent due to the build-up of pressure beneath the Earth's surface. As the magma rises, it creates fractures in the rocks above, eventually reaching the surface through the vent. This process is driven by the buoyancy of the magma and the force of gas expansion within it.
Which type of volcano has explosive eruptions due to thick magma which contains a large amount pf pressurized gas?
A stratovolcano, also known as a composite volcano, is the type of volcano that has explosive eruptions due to thick magma containing a large amount of pressurized gas. The build-up of pressure from the trapped gas within the viscous magma leads to explosive eruptions that can be highly destructive.
A volcano with a magma supply which is felsic and has a high viscosity will tend to have what type of eruption?
A volcano with felsic magma and high viscosity will likely have explosive eruptions due to the build-up of pressure from gas bubbles being trapped within the thick magma. This can lead to violent eruptions with ash, gas, and volcanic rocks being ejected forcefully from the volcano.
A mountain that forms when layers of lava and ash erupt and build up is a .?
a volcano
Does lava build up the land when a volcano erupts?
Yes, lava from a volcano can build up the land over time as it cools and solidifies, forming new layers of rock and contributing to the growth of the volcano. This process is essential in creating new landmasses and reshaping the landscape.
How does magma get pushed through a vent?
Magma gets pushed through a vent due to the build-up of pressure beneath the Earth's surface. As the magma rises, it creates fractures in the rocks above, eventually reaching the surface through the vent. This process is driven by the buoyancy of the magma and the force of gas expansion within it.
What is a mountain pushed and made up by magma?
Volcano?
How does the magma rise from the volcano?
magma rises up out of a volcano by the build up of pressure
What is it called when a volcano ejects gas?
A volcano " vents " gas when pressure builds up
How does a volcano build into a mountain?
A volcano forms a mountain as ash and/or lava build up over time from successive eruptions.
How do some volcanoes occur where one plate sinks beneath the other?
The plates get pushed up, then the the plate that gets pushed, pushes land up then you have a volcano.
Why does magma shoot out of a volcano?
because it is being pushed up from under the ground under pressure.
A small volcano is erupting lava containing little silica what type of volcano is likely to build up from these eruptions?
a shield volcano
How did Surtsey appear suddenly out of the sea?
Because two plates collided and pushed up creating the volcano.
How can you tell an vocano is about to erupt?
Before a Volcano "erupts" the mountain and surrounding areas will experience seismic activity (Earthquakes) for hours, days, weeks and even months before the initial eruption. Also Vulcanologist monitor gas emissions from the volcano to see if there is a build up gas. And of course there many be some steam/smoke coming from the volcano (Does not have to be from the cone of the volcano, can be from vents on the side or further down the volcano!) In the case of Mt St Helens - A "DOME" appeared on the side of the mountain, this was a build up of Magma further down the mountain slope in which grew larger by the day until the initial and catastrophic eruption.
Which type of volcano has explosive eruptions due to thick magma which contains a large amount pf pressurized gas?
A stratovolcano, also known as a composite volcano, is the type of volcano that has explosive eruptions due to thick magma containing a large amount of pressurized gas. The build-up of pressure from the trapped gas within the viscous magma leads to explosive eruptions that can be highly destructive.
How was Krakatau formed?
Krakatoa was formed off of a convergent plate boundary which pushed the land up and made a volcano.
