Across
- 2. The idea that matter is neither created nor destroyed
- 3. The space between two objects
- 4. A force that slows the movement of objects that rub or slide against each other
- 5. slowing down
- 8. The rate at which an object moves
- 11. A material that limits how much heat can go through it
- 13. flat and horizontal line that means stopping
- 14. Transfer of heat by rays or waves
- 15. A change in which no new material is formed
- 18. The material, or matter, of which something is made.
- 19. Hot air rises, cold air sinks, liquid or gas
- 20. When one substance breaks down into another
Down
- 1. speeding up
- 6. A material that heat moves through easily
- 7. Something that stays still or keeps moving until something changes it
- 9. Pulls things towards the center of the Earth
- 10. The movement of changing location from one place to another
- 12. A push or a pull on an object
- 16. Transfer of heat between two objects that touch
- 17. A change in which one or more new types of matter form