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The molten rock that erupts from volcanoes ultimately comes from Earth's mantle, which is a very hot layer of rock. It is hot enough that some if its rock can melt and rise through the crust.
Wiki User
∙ 7y ago
Wiki User
∙ 15y agoA volcano may violently eject lava depending on the geology of the volcano. There could be a sudden injection of water deep in the tube, or there could be a sudden release of pressure in the magma pool below the tube, or other things that might cause the pressure to rise rapidly. Under those conditions, lava won't flow out but will be ejected with force.
Wiki User
∙ 13y agoBecause the volcano is created from the upwelling of magma from the mantle at weak spots in the crust. Magma, once above the ground, is called lava.
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How are volcanoes developed?
Volcanoes are created by layers of ash and lava eruptions
How much lava comes out of a volcanoes?
a lot of lava comes out of volcanoes .
Molten material that flows from volcanoes?
lava.
The magma released from volcanoes is?
lava
What forms from lava that is higher in water and silica content than lava that forms shield volcanoes?
Cinder-Cone Volcanoes and Composite Volcanoes
Do volcanoes need lava to be known as actual volcanoes?
No, volcanoes do not need lava to be volcanoes.
Can lava make volcanoes?
NO, volcanoes make lava.
How are volcanoes developed?
Volcanoes are created by layers of ash and lava eruptions
How much lava comes out of a volcanoes?
a lot of lava comes out of volcanoes .
Molten material that flows from volcanoes?
lava.
The magma released from volcanoes is?
lava
What forms from lava that is higher in water and silica content than lava that forms shield volcanoes?
Cinder-Cone Volcanoes and Composite Volcanoes
How do volcanoes shape the Pacific Northwest?
volcanoes will erupt and let out lava then the lava will harden and that will be new land.
What do volcanoes blow out?
Lava
What can volcanoes make?
lava
Are volcanoes full of lava?
no
What are the main features of a volcanoes?
magma lava
