Across
- 3. rain
- 5. movement of co2 from respiration and photosynthesis
- 8. orange juice, water,
- 9. solid, liquid, gas or plasma
- 11. how much matter is in an object
- 12. cannot be compressed, strong bond between molecules
- 13. changing from water vapour into liquid water
- 15. no definite shape, can be compressed
- 17. the circular movement of heat in liquids or gases
- 19. changing from liquid water to water vapour
- 21. mass + gravity
Down
- 1. made from 1 ind of atoms only
- 2. when matter cools
- 4. a compound of 2 or more atoms
- 6. the smallest unit of matter
- 7. force (a push or a pull)
- 10. getting bigger because of heat
- 13. made smaller
- 14. how close together atoms and molecules are
- 16. a force of attraction between the Earth and objects
- 18. space matter takes up
- 20. a measurement of the atmosphere above sea level