P1 so far

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Across
  1. 6. when light changes direction in a different medium (10)
  2. 10. model of the solar system with the sun at the centre (12)
Down
  1. 1. model of the solar system with the earth at the centre (10)
  2. 2. the process of making an image larger (13)
  3. 3. the point where an image is in focus (5,5)
  4. 4. glass object that refracts light and is found in a telescope (4)
  5. 5. this travels in waves and is represented by straight lines in diagrams (5)
  6. 7. type of lens with two curved sides that is wider in the middle (6)
  7. 8. tool Galileo used to spot Jupiter's moons (9)
  8. 9. the small lens in a telescope before light reaches your eye (8)