Grade 6 Unit 3 Revision

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Across
  1. 1. hole A region in space where gravity is so strong that nothing can escape from it.
  2. 4. The ability to do work or cause change.
  3. 5. The force exerted by gravity on an object's mass.
  4. 7. A large system of stars, gas, and dust held together by gravity.
  5. 9. ________ energy Stored energy that an object has due to its position or shape.
  6. 11. A force that opposes motion and causes energy dissipation as heat.
  7. 14. The largest planet in our solar system.
  8. 15. _______ system The Sun and all the planets, moons, and other objects that orbit it.
  9. 17. The path a planet takes around a star or a moon around a planet.
  10. 19. ________ energy The energy of motion.
  11. 20. The movement of a planet around the Sun.
Down
  1. 2. A small icy body that orbits the Sun and develops a tail when it gets close.
  2. 3. A massive, glowing ball of gas that produces light and heat, like the Sun.
  3. 6. The force that pulls objects toward each other, especially towards Earth.
  4. 8. A small rocky body that orbits the Sun, mostly found between Mars and Jupiter.
  5. 10. A cloud of gas and dust in space where stars and planets form.
  6. 12. The spinning of a planet on its axis.
  7. 13. The amount of matter in an object, measured in kilograms.
  8. 16. The spreading out or loss of energy, usually as heat.
  9. 18. The rise and fall of sea levels caused by the gravitational pull of the Moon and the Sun.