ph and ch - Diamond

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Across
  1. 2. Use this to ring another person.
  2. 4. You take these with a camera.
  3. 5. A very clever sea animal.
  4. 6. A persistent pain in your gnashers.
  5. 8. 26 letters make this up.
  6. 9. Sailors use these to stop their boats from moving.
  7. 10. Every child's favourite place!
Down
  1. 1. You collect these from the photocopier.
  2. 3. Present-giving time of the year.
  3. 7. You fill this with food when you're hungry.