VOLCANO ERUPT
Why do Valcanoes erupt? Explain.
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| active volcano |
There is a large amount
of heat deep down in the earth’s mentle.
The rocks in this layer of earth are slowly melted due to this heat and a thick flowing substance called MAGMA is formed .
Magma that has erupted is called lava .
Effusive eruptions – magma rises through the surface and flows out of the volcano as a viscous liquid called lava.
Explosive eruptions – magma is torn apart as it rises and reaches the surface in pieces known as pyroclasts. .
Molten magma travels up the chambers in the volcano
and when rises to its surface , the volcano erupts .
