Agata Moretti and Maddalena Clericuzio

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Across
  1. 3. it's also known as a falling star
  2. 8. our star
  3. 10. quantity of matter
  4. 13. An instrument for measuring and indicating temperature.
  5. 15. as you get older you have less and less...
  6. 16. The name of the planet where we live.
  7. 17. The phase transition from solid to gas.
  8. 18. It is the subatomic particle that hasn't any charge
  9. 19. It is the energy of movement.
  10. 20. It is the subatomic particle that has got a positive charge
Down
  1. 1. It is the state of matter that can be found at extremely high temperatures
  2. 2. The phase transition from gas to solid.
  3. 4. (8,4) Opposite of number 1
  4. 5. Mass over volume
  5. 6. (4,6)A baby "planet".
  6. 7. Mass, volume and energy are properties of...?
  7. 9. (7,7)If it is not nuclear fusion it's...
  8. 11. (7,6) you should know...hehe
  9. 12. There is only one in our solar system.
  10. 14. it is a body that orbits around a planet, it can be artificial or natural.