Volcanoes

• What are the two types of boundaries where volcanoes are found?

  Destructive and constructive boundaries
• Which continent has a lot of volcanoes?

  Africa
• Where are the most explosive volcanoes located?

  In places like Indonesia and Africa
• What are the components of volcanic clouds?

  • Small rocks (tephra)
  • Dust
  • Very dense heat
• What is the effect of melted snow and ice during a volcanic eruption?

  It can cause flooding
• What is the main component of the toxic gas released by volcanoes?

  Su
• How does basalt lava behave?

  It is runny and flows slowly like walking
• How does andesite lava behave?

  It is sticky like toothpaste or a paste
• What can happen when ice and lava melt together?

  It may cause floods cause of the ice turning to water
• What is a pyroclastic flow?

  • A lahar (volcanic mudflow)
  • An avalanche of super-hot gas
  • Gas traveling very quickly
• Where is Iceland located in relation to the UK?

  Iceland is Northwest of the UK
• Why does Iceland have many volcanoes?

  Because it is on a constructive plate boundary between the Eurasian and North American plates