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WHAT IS A VOLCANO? Volcanoes are openings in the Earth’s rocky Core crust which allow hot molten (melted) rock, ash and gas to escape from below the surface. Volcanoes form when parts of the Earth’s solid mantle melts to form pockets of hot liquid rock called magma. This magma collects in large pools deep underground known as magma chambers.
Lava is hot, liquefied rock that flows from a volcano or other opening in the surface of Earth. When the liquid rock is still underground it is known as magma. Igneous rock is formed when lava cools and hardens.
Magma released from a volcano is known as lava. Fresh lava ranges from 1,300 to 2,200 °F (700 to 1,200 ° C) in temperature. It glows red as it flows out of the volcano’s opening. As it cools, it hardens into rock. Strong volcanic eruptions throw bits of magma into the air.
The eruption released an avalanche of hot ash, gas, steam, and rocks that mowed down giant trees up to 15 miles (24 kilometers) away. When magma finds a way to escape from beneath the earth's...
Check out these fascinating volcano facts with National Geographic Kids! What is a volcano? Why does it erupt? And where can you find the world's biggest?
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11 Οκτ 2024 · Volcanoes occur when material significantly warmer than its surroundings is erupted onto the surface of a planet or moon from its interior. On Earth, the erupted material can be liquid rock ("lava" when it's on the surface, "magma" when it's underground), ash, cinders, and/or gas.
