Structure of a Volcano

Structure of a Volcano

A volcano is a opening in the surface of the earth which allows hot, molten rock, ash, and gases to escape from below the surface through a pipe-like outlet called a vent. These eruptions form a cone-shaped landform made of these materials.

  • Magma chamber: A large underground pool of molten rock found beneath the surface of the Earth.
  • Lava: Hot molten magma when it reaches the surface.
  • Vent: An opening which allows hot magma, ash and gases to escape.
  • Crater: A bowl-shaped opening at the top of a volcano
  • Ash cloud: Clouds of steam, gases and hot ash that is spewed out from a volcanic eruption.
  • Volcanic bombs: A mass of molten rock that are ejected during a volcanic eruption.

Videos on the structure of a volcano

National Geographic – How Volcanoes Form

Formation of volcanic islands

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