volcanoes erupt due to the extreme temperatures inside earth. This extreme heat melts the rock inside earth and forms a thick liquid substance. The molten rock is not as dense as the surrounding rocks and thus rises upward and collects in chambers. Some of this molten rock is pushed outside from cracks or fissures on the surface of earth. This makes a volcano erupt and the thick molten rock comes out.
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| Volcano Eruption |
Magma
The thick flowing substance that forms from the melting of rocks deep in the earth's crust is called magma.
Lava
Lava is the magma that comes out during the volcanic eruption.
Dormant
A Dormant volcano is a volcano that has not erupted recently but may erupt in future.
Mauna Loa
Mauna Loa is an active volcano and the largest volcano on earth. The summit of the volcano is about 17 km above its base.
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