Volcanoes

• Tectonic plates


  Random jagged shapes that the Earth's outer layer (crust) is divided into
• Plate margins/boundaries


  Where the tectonic plates meet
• Types of plate margins

  • Destructive
  • Constructive
  • Conservative
• Destructive plate margins


  • Plates collide towards each other
• Constructive plate margins


  • Plates pull apart
• Conservative plate margins


  • Plates move side by side in different directions or at different speeds
• Formation of volcanoes


  1. Destructive plate margins

  2. Constructive plate margins
• Destructive volcanoes


  Formed where two plates collide, one oceanic and one continental, with the oceanic plate sinking/subducting beneath the continental plate, melting into magma which rises back up through vents
• Constructive volcanoes


  Formed when two plates move away from each other, creating a gap which magma rises up and fills, forming a shield volcano