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