Across
- 2. How hot or cold something is.
- 4. How much mass is inside a volume.
- 5. When something gets bigger because it is heated.
- 10. Heat transfer through a material by touching.
- 11. When a solid changes directly into gas.
- 12. Random movement of small particles in a liquid or gas. (8,6)
- 13. Energy that moves from a hot object to a cold object.
- 16. A state where particles move freely.
- 17. A temperature scale starting at absolute zero. (6,5)
- 19. When liquid changes to gas at the surface.
- 20. A material that allows heat to move easily.
- 22. A state where particles move around each other.
- 24. Heat energy inside an object. (7,6)
- 25. Heat transfer by moving liquids or gases.
- 26. A material that stops heat moving easily.
Down
- 1. The energy needed to change the state of 1 kg of a substance. (8,5,4)
- 3. When gas changes into liquid.
- 6. The energy needed to heat 1 kg of a substance by 1°C. (8,4,8)
- 7. When liquid quickly changes to gas everywhere in the liquid.
- 8. When solid changes into liquid.
- 9. The temperature where a liquid becomes a gas. (7,5)
- 11. A state where particles stay in fixed positions.
- 14. Heat transfer by waves, without touching.
- 15. The temperature where a solid becomes a liquid. (7,5)
- 18. The coldest possible temperature. (8,4)
- 21. When liquid changes into solid.
- 23. A space with no particles inside.