Magma
Composite volcanoes can contain virtually any kind of magma ranging from basaltic to rhyolitic. Andesitic magma is the most common. One stratovolcano contains unique carbonatite magma, which is unlike the magma of any other volcano in the world.
When a volcano erupts, it spews out magma from the Earth's mantle. In addition to the magma, it brings with it ash, smoke, and debris from inside and around the volcano.
Any rock created by the cooling of magma or molten material is classified as an igneous rock. These rocks can either be cooled in the earth or on the earths surface. Rocks cooled inside the earth are called intrusive igneous rocks, and have large crystals. Rocks cooled on the earth's surface are called extrusive igneous rocks. These rocks, due to faster cooling times, have very very tiny crystals.
Some volcanoes form from mountains that are hollowed out over a certain period of time when the tectonic plates have allowed a little magma to slip between them. (I will tell you the parts of the volcano in a sec) Other volcanoes are formed from under sea volcanoes that have erupted and the lava cooled and settled on until it reached above sea level (that is how Hawaii formed). PARTS OF THE VOLCANO: magma- hot liquid stored inside of the earth lava- magma that reaches earth's surface magma chamber- the place where the magma is stored until it can go up the pipe (sometimes this can fuel more then one volcano) pipe- the hollowed out tube inside the volcano that the magma flows up to reach the vent (this part can have side tubes that go a little ways into the side of the volcano) vent- the place on the volcano that the magma first bursts out of c??- a large bowl shaped part of the volcano that the lava blows out and then runs down the side of the volcano :D Sorry i don't know of any pictures that show this process except for in my science book!
This is known as a volcanic eruption.
No. Magma is molten rock inside Earth. Lava is molten rock outside Earth.
Well, All I can said is. When earth is crated its full with magma and lava. That pretty much when earth don't have any crust. But, when the earth cools down, it turn to hard rock, and some of the lava and magma are inside the earth's core
The same way any solid forms from a liquid - the liquid magma cools off and becomes solid. This usually happens when the magma comes to the cooler surface of the earth as lava, but it can occur very slowly inside of the earth as the magma gradually cools.
Molten rock in any of Earth's layers is called magma. The mantle is actually composed of solid, but very hot and plastic-like rock.
Molten liquid rock inside Earth's mantle is called
No, the gravitational force of the Earth, or any body in the Universe, is because of the mass of that body...... the amount of matter the body comprises. The greater the mass, the greater the gravitational tug.
In the grand scheme of the world, no magma is not rare. Magma is liquid rock beneath the earth's surface and since the Athenosphere is an area of partial melt you could argue that beneath the ground at any location there is magma. However it is rare for Magma to ascend and erupt on the earth's surface at lava.
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earthquakes pressurize the main magma chamber in a volcano by the earth crust. as a result the magma comes out of the volcano