Chapter 11 : The Solar System and The Stars

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Across
  1. 2. What is a chunk of rocky material covered with ice called?
  2. 4. What are the four outer planets called?
  3. 6. What is the common unit used to measure large distances?
  4. 8. What are the paths that the planets revolve around the sun in called?
  5. 9. What are the objects that travel around our sun called?
  6. 11. What is another word for spacecraft?
  7. 12. What is the imaginary line called that objects spin around?
  8. 14. What do we call groups of stars?
  9. 16. What do we call the belief that objects in the sky influence people's lives?
  10. 17. What distance does light travel at?
  11. 18. What is a lump of rock that falls from space called?
Down
  1. 1. What are the four planets closest to the sun known as?
  2. 3. What is the method of measuring distances indirectly by drawing a scale diagram of a triangle called?
  3. 5. What are irregular, rock objects called?
  4. 7. How many planets are there?
  5. 10. What is the motion of one object around another called?
  6. 13. What is the spinning of an object around an imaginary line called?
  7. 15. What is the device that splits light energy into a series of colours?