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Heat Transfer - Coggle Diagram

- - - - Insulators are good for keeping things warm as they trap heat in, e,g, gloves
- - - - heat rises due to the lower density of hotter fluids (the particles are faster and further apart due to weaker bonds between them)
      - Convection only occurs in fluids
        
        Fluids are gases and liquids (anything that flows).
        
        When fluids cool down, its particles move closer together and its density increases.
        
        When fluids get hotter, the particles move faster and further apart and the density decreases.
      - Density = mass divided by volume
        
        p = m/v