volcanoe

• what is a scientist who studies volcanoes called

  volcanologist
• can you draw a diagram of a volcano?

  Yes/no

  
• how is a volcano formed

  1.when two plates slide or separate magma can rise up and fill the space that opens ( an eruption can happen due to pressure )

  2.when magma wells up from the chamber it cools and turns to lava

  3.after many eruptions layers of lava and ash build up around the vent a cone shaped mountain is formed with a crater at the top were the lava comes through
• active volcano


  a volcano that has erupted in the past 10,000 years
• dormant volcano


  a volcano that had not erupted in 10,000 years but is expected to erupt again in the future
• extinct volcano

  is never expected to erupt again
• were are 75% of earths active volcanoes located

  pacific ring of fire