Science Crossword

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Across
  1. 3. the steps of an investigation or experiment
  2. 8. non-renewable energy with 3 stages
  3. 9. not ever alive, as distinct from dead
  4. 11. a visual thinking tool that analyses and compares
  5. 14. water used to make energy
  6. 17. substances that make up rocks
  7. 19. a number of food chains joined together
  8. 20. all of space and the matter and energy in it
  9. 21. tiny but heavy particles
Down
  1. 1. animal that eats plants and animals
  2. 2. machine with more than 1 simple machine
  3. 4. describes chemicals that are dangerous to touch, inhale or swallow
  4. 5. a force that keeps objects floating
  5. 6. devices that make physical tasks easier
  6. 7. force the force that acts between magnets
  7. 10. a complex carbohydrate that stores energy in plants
  8. 12. a very small particle that makes up all things
  9. 13. animal that eats other animals
  10. 15. move energy from one object to another
  11. 16. an object falling at a constant speed
  12. 18. the unit for measuring forces