1. Gases and liquids transfer heat by..
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2. Convection currents are all about..
- change in surroundings
- changes in density
- changes in temperature
3. Radiation depends on
- surface colour and texture
- light and heat
4. Most heat in liquids and gases is transferred by?
5. Light, shiny surfaces are poor absorbers and
- poor emitters of infrared radiation
- good emitters of infrared radiation