Newton News Conundrum

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Across
  1. 4. Extremely surprising or impressive
  2. 7. Year 4 Red Teacher
  3. 9. A polar bear lives in this biome
  4. 10. Value of 6 in 768
  5. 13. A 3D shape which has 6 square faces
  6. 15. Part of a plant that is underground
  7. 17. Author of Charlie and the Chocolate Factory
  8. 18. Abbreviation for our school
Down
  1. 1. Furthest planet from the Sun
  2. 2. House founder that invented the light bulb
  3. 3. Every year group has this on a Thursday
  4. 5. A star at the centre of our Solar System
  5. 6. In between yesterday and tomorrow
  6. 8. The subject Ms Fariel teaches us
  7. 9. To make an effort
  8. 11. Contraction for could not
  9. 12. A sport that uses a ball to get spares and strikes
  10. 13. Antonym for dirty
  11. 14. Part of the body used to hear
  12. 16. Past tense of teach