Heat Transfer

4. Infrared waves transfer... by radiation
5. White or silver objects tend to... radiation away
7. Heat always transfers from hotter objects to... ones
11. The store of energy in a warm object
12. In a fluid, warmer particles are less... than cold particles
13. A substance that conducts heat well
14. The store of energy in something that is moving
16. The rising of warm fluids and sinking of cold fluids is called a convection...
19. Heat transfer by electromagnetic waves including infrared light
21. Particles do more of this when they are heated
23. Heat radiates from all warm objects as...

1. Particles move... when they are hotter
2. Heat transfer by the upward movement of warmer, less dense particles in a gas or liquid
3. A group of good conductors including copper, aluminium and iron
6. A measure of the average kinetic energy of particles in an object
8. A substance that is a poor conductor of heat
9. Heat transfer by physical contact with vibrating particles
10. A state of matter that acts as a good insulator because particles are far apart
15. The temperature scale where water freezes at zero
17. Cold particles in a liquid or gas tend to...
18. A liquid that comes out of our taps
20. A mixture of gases that we breathe
22. On a sunny day clothing coloured... absorbs most radiation from the Sun