Year 7 Space

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Across
  1. 6. A contact force that acts against the movement of an object.
  2. 9. half of the Earth, North or South.
  3. 11. Theory about the start of the universe.
  4. 12. Turning around on an axis.
  5. 15. The turning effect of a force.
  6. 16. The amount of mattter in an object.
  7. 19. A space with nothing in it, not even air.
  8. 20. Speed with a direction.
Down
  1. 1. The units of measurement of force.
  2. 2. An oval shape.
  3. 3. The change in velocity divided by time.
  4. 4. Any object that is in orbit around another object.
  5. 5. The path an object takes to move around another object.
  6. 7. A vertical force caused by gravity.
  7. 8. A quantity which has magnitude and direction.
  8. 10. The line that goes from the centre of a circle to its edge.
  9. 13. The imaginary line through the centre of the Earth between the north and south poles.
  10. 14. Radiation remaining from the Big Bang explosion.
  11. 17. A quantity which has magnitude but no direction.
  12. 18. The line that goes from one side of a circle to the other while passing through the centre.