Space Raiders Crossword

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Across
  1. 1. it's outside the earth and you can't breath there
  2. 4. to be scared
  3. 5. it's connected to our neck
  4. 7. means to apologise
  5. 10. to achieve and complete successfully
  6. 12. it can be right, acute and obtuse
  7. 14. kids love to blow this
  8. 15. to have a lot of strength
Down
  1. 2. red plus blue makes me
  2. 3. it's "everywhere"
  3. 6. something that in not known
  4. 8. easily understood or the answer is clear
  5. 9. sound that has repeated after the original sound has stopped
  6. 11. most of us have this on our head
  7. 13. it rhymes with bright and is the opposite of heavy