Answer:
Magma is extremely hot liquid and semi-liquid rock located under Earth’s surface. Earth has a layered structure that consists of the inner core, outer core, mantle, and crust. Much of the planet’s mantle consists of magma. This magma can push through holes or cracks in the crust, causing a volcanic eruption. When magma flows or erupts onto Earth’s surface, it is called lava.
Explanation:
. What is the importance of magma composition?
Most of the mantle and crust are solid, so the presence of magma is crucial to understanding the geology and morphology of the mantle. Differences in temperature, pressure, and structural formations in the mantle and crust cause magma to form in different ways.
How magma is formed?
Magma forms from partial melting of mantle rocks. As the rocks move upward (or have water added to them), they start to melt a little bit.As they rise, gas molecules in the magma come out of solution and form bubbles and as the bubbles rise they expand.
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