Rocks

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Across
  1. 2. A circle of giant rocks- a world wonder
  2. 3. Forms when volcanos erupt
  3. 6. Forms when a rock changes in heat/pressure
  4. 9. A material that degrades into smaller pieces
  5. 10. When magma hardens beneath the earth
  6. 12. The study of the earth
Down
  1. 1. The laying down of sediment carried by wind
  2. 4. A rock that is created when lava erupts on earth
  3. 5. Ash is purified
  4. 7. Form from a sequence of processes
  5. 8. A triangular wonder of the world
  6. 11. The process of being liquified by heat