Structure of the Earth

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Across
  1. 3. the inner core of the Earth is the H________
  2. 6. the centre of the Earth
  3. 9. the inner core is made from this metal
  4. 10. where the insides of the Earth explode through the crust
Down
  1. 1. this surrounds the Earth caused by the iron core.
  2. 2. this layer is between the crust an the outer core
  3. 4. the crust is the only s______ layer of the Earth
  4. 5. iron is a type of metal
  5. 7. there are _______ layers to the Earth
  6. 8. there is an outer core and an _________ core
  7. 11. the solid outer layer of the Earth