Forces and Space

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Across
  1. 4. An object which orbits a star
  2. 6. An imaginary line which divides the Northern and Southern Hemispheres
  3. 8. The law that says the extension of a spring is proportional the force applied to it
  4. 10. The time taken for the Earth to rotate once on its axis
  5. 14. The top or bottom half of the Earth
  6. 15. A non-contact force which is always attractive
  7. 16. The upward force in floating and submerged objects
  8. 20. When the speed of an object increases
  9. 21. The planet furthest from the Sun
  10. 25. An object which orbits a planet
  11. 26. Another thing which changes when a force acts on an object
  12. 27. The planet with many rings
  13. 28. The season in Sydney when the South Pole is tilted toward the Sun
  14. 29. The closest planet to the Sun
  15. 31. A minor planet
Down
  1. 1. The season in London when the North Pole is tilted away from the Sun
  2. 2. The time taken for the Moon to orbit once around the Earth
  3. 3. Our home planet
  4. 5. When forces in opposite directions are equal
  5. 7. Equal to the mass (kg) x gravitational field strength (N/m) on Earth
  6. 9. The opposite of negative
  7. 11. A force between opposite charges
  8. 12. The planet with an atmosphere of sulphuric acid
  9. 13. A contact force when two surfaces rub against each other
  10. 17. The Earth’s satellite
  11. 18. A force between opposite poles
  12. 19. The largest planet in the solar system
  13. 22. Equal to mass (g) divided by volume (cm3)
  14. 23. The opposite of South
  15. 24. The fourth planet from the Sun
  16. 30. The time taken for the Earth to orbit once around the Sun