describe and give the definition of magma.
Answers
Answer:
Magma is extremely hot liquid and semi-liquid rock located under Earth's surface.This magma can push through holes or cracks in the crust, causing a volcanic eruption.
Explanation:
Definition:
Magma is molten rock found below the earth's surface. The temperature at which a rock melts is affected by its composition, pressure and water. Magma forms when volcanoes cools and crystallizes into igneous rock.
How is it formed?
It is formed from the melting of rocks in the earth's lithosphere, which is the outermost shell of the earth made of the earth's crust and upper part of the mantle, which is the layer below the lithosphere.
What is magma composed of?
Magma is a molten and semi-molten rock mixture found under the surface of the Earth. This mixture is usually made up of four parts: a hot liquid base, called the melt; minerals crystallized by the melt; solid rocks incorporated into the melt from the surrounding confines; and dissolved gases.