ejecta
The general term for the different types of material that a volcano spews out is ejecta.
IT IS A Sheild volcano
yes a series of explosions can cause some volcano's to erupt
Rising magma forced up as the result of plate tectonics, gravity, or what have you places incredible pressure on sides of the volcano and causes it to bulge. When the pressure becomes too great and the volcano rips open to release the pressure, an eruption begins.
volcano
Magma gets pushed through a vent because when the volcano ruptures it is forced out of the volcano.
Volcano.
Basaltic magma is forced upward in a vent
Lava
As far as i know, I believe that the plate of earth underneath that's spitting out the lava has a little time limit going over it. Any volcano can erupt from a couple seconds to maybe even a couple minutes. ~Mega :]
A volcano is an opening in the earth's surface through which steam, ashes, and lava are forced out.
No, magma is not material from the core of the Earth. Magma is molten rock that is generated in the Earth's mantle, which lies between the core and the crust. Magma can rise to the surface during volcanic eruptions, forming lava flows or erupting explosively.