A volcano?
it is just called molten rock, and it comes out of the Earths crust via volcanoes. you can also say that its melted lava
vent a+
An opening in the Earth's crust through which volcanic materials pass to the Earth's surface is called a volcanic vent. Magma from beneath the Earth's surface is forced upwards through these vents, often resulting in volcanic eruptions.
It doesn't. The volcano is a result of the magma travelling from the earths core through geological faults and breaking through the crust of the Earth. The mountain shaped Volcano that you see is the remnants of solidified ash and magma (pumice) which has been ejected from the magma chamber. This cone builds up over the fissure which ejects the magma onto the surface.
There are almost no extrusive rocks on the earths surface because they are all under the earths surface. They are mainly lower than the earths surface.
vent a+
it is just called molten rock, and it comes out of the Earths crust via volcanoes. you can also say that its melted lava
earthquake/fissure
vent a+
Volcano or shield volcano.
Gravity.
Fumaroles are fissures through which water and water vapor escape from the Earth's surface.
An opening in the Earth's crust through which volcanic materials pass to the Earth's surface is called a volcanic vent. Magma from beneath the Earth's surface is forced upwards through these vents, often resulting in volcanic eruptions.
It doesn't. The volcano is a result of the magma travelling from the earths core through geological faults and breaking through the crust of the Earth. The mountain shaped Volcano that you see is the remnants of solidified ash and magma (pumice) which has been ejected from the magma chamber. This cone builds up over the fissure which ejects the magma onto the surface.
Through cracks, holes or vents in the earths crust.
vent a+
100