Geography

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Across
  1. 5. The introduction into the environment of a substance which has a poisonous or harmfull effect.
  2. 7. A volcano that has not erupted for a long time but have a risk of erupting.
  3. 8. A powdery residue left after a burning of a residue.
Down
  1. 1. A volcano that has a empty magma chamber.
  2. 2. People can visit and enjoy the scenery at the place.
  3. 3. A type of raw material that can too be found in volcanic rocks and is yellow in colour.
  4. 4. A type of raw material that can be found in volcanic rocks and is the strongest substance on earth
  5. 6. A type of molten rock from the volcano