VOLCANO

• How is Magma produced?

  produced when tectonic plates collide, making the temperature and pressure build up, resulting in melting rocks, producing magma.
• What is the opening of a volcano called?

  crater
• What is magma that flows out of the volcano called?

  lava
• What are the two types of volcanic eruptions?

  explosive and nonexplosive
• what do pyroclastic materials consist?

  volcanic glass, ashes, lava and rocks
• When does a nonexplosive volcanic eruption happen?


  it happens when there is less pressure in the magma chamber
• When does a explosive volcanic eruption occur?

  when there is high pressure inside the magma chamber
• What is the benefit of a volcanic eruption?


  fertilization of soil