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Why do valcanoes erupt?
A volcano is formed by pressure building up below the Earth's crust. Magma forces it way through weaknesses in the earth's crust. When the magma emerges it is called lava. When it cools, it solidifies into rock,or it may emerge though thin cracks,which are called fissure.Or it may be forced though wider pipes,that starts to build up, to a volcano.
What provides the force that causes magma to erupt to the surface?
Magma is propelled to the surface by temperature differences, which cause convection currents. The temperature differences result from radioactive elements within the mantle.
Is the build up of hardened lava at openings in the Earth's crust from where magma is able to erupt?
volcano
Where does magma get its heat from and how is it maintained?
The shifting of tectonic plates causes extreme friction, thus heat. The heat is only maintained as long as the magma remains under high pressure. Ounce it's released, it begins to lose heat rapidly.
Does lava erupt because of the heat?
NO, it erupts because of the build-up of pressure in the magma containment. When the pressure becomes so strong that there is no other way to release it, the lava rushes up and blows off the top of the volcano.
What happens inside volcanoes when erupt?
When magma is Heat up at that time magma also gain the kinetic Energy and Explosion occure................
Why do valcanoes erupt?
A volcano is formed by pressure building up below the Earth's crust. Magma forces it way through weaknesses in the earth's crust. When the magma emerges it is called lava. When it cools, it solidifies into rock,or it may emerge though thin cracks,which are called fissure.Or it may be forced though wider pipes,that starts to build up, to a volcano.
What are the steps a volcano has to go through to erupt?
1. Pressure in the magma chamber begins to build up. 2. The pressure forces the magma to go up through the vent. 3. Then it will erupt
What builds up in a mountain causing it to erupt?
Water !!. . . naah Magma what else ?? !!
What provides the force that causes magma to erupt to the surface?
Magma is propelled to the surface by temperature differences, which cause convection currents. The temperature differences result from radioactive elements within the mantle.
Is the build up of hardened lava at openings in the Earth's crust from where magma is able to erupt?
volcano
Where does magma get its heat from and how is it maintained?
The shifting of tectonic plates causes extreme friction, thus heat. The heat is only maintained as long as the magma remains under high pressure. Ounce it's released, it begins to lose heat rapidly.
Does lava erupt because of the heat?
NO, it erupts because of the build-up of pressure in the magma containment. When the pressure becomes so strong that there is no other way to release it, the lava rushes up and blows off the top of the volcano.
What is the cause for volcano eruption?
injection of new magma into a chamber that is already filled with magma of similar or different composition. This injection forces some of the magma in the chamber to move up in to the conduit and erupt at the surface.
How do volcanoes aruped?
the magma pushes up and becomes lava. when there is enough pressure lava spews out. that is how a volcano erupt
Can the magma in the volcano cool down?
not unles the volcano has become extinct ad there is a tiny bit of magma left inside the volcano. It cant cool down though if the volcao is still active bevause it wll just keep building up and building up on tension and heat until finally the volcano will erupt again.
Why does magma rise slowly through the mantle?
The viscosity (resistance to runniness) of magma affects the rate at which it rises up through the mantle. High viscosity magma rises slowly because it's thick and sticky, and low viscosity magma rises quickly (like the big island of Hawaii). Low viscosity magma is less likely to erupt explosively because it has less chance to build up pressure. High viscosity magma is the opposite and a lot of pressure has to build up before it will erupt, which causes a more explosive/sudden eruption.
