Volcanoes- Week 30

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Across
  1. 1. cloud of extremely hot ash and rock fragments
  2. 5. a result of plate tectonics
  3. 7. scientist who studies volcanoes
  4. 8. large volcanic crater
Down
  1. 2. movement and collision of Earth's plates
  2. 3. layer of Earth below the crust
  3. 4. mountains or hills which lava erupts
  4. 6. crack in the Earth's surface that can erupt lava