how does volcanoes erupt and earthquakes occur explain
Answers
Explanation:
Volcanoes erupt when molten rock called magma rises to the surface.
Magma is formed when the earth's mantle melts.
Melting may happen where tectonic plates are pulling apart or where one plate is pushed down under another.
Magma is lighter than rock so rises towards the Earth's surface.
As the magma rises, bubbles of gas form inside it.
Runny magma erupts through openings or vents in the earth's crust before flowing onto its surface as lava.
If magma is thick, gas bubbles cannot easily escape and pressure builds up as the magma rises.
When the pressure is too much an explosive eruption can happen, which can be dangerous
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Answer:
Deep within the Earth it is so hot that some rocks slowly melt and become a thick flowing substance called magma. Since it is lighter than the solid rock around it, magma rises and collects in magma chambers. Eventually, some of the magma pushes through vents and fissures to the Earth's surface