How does the temperature of an object affect the rate at which it emits infrared radiation ?

What is a vacuum ?

Why are houses in hot countries often painted white ?

Why are the pipes at the back of a fridge often painted black ?

How is the arrangement of the particles in a liquid different from that in a solid ?

How is the arrangement of the particles in a gas different from that in a liquid ?

Why are saucepans often made of metal with wooden handles ?

Why are materials that trap air good insulators ?

Why doesn't convection occur in solids ?

Why does a fluid become less dense when it is heated ?

What effect would decreasing the surface area of a liquid have on the rate of evaporation ?

What effect would decreasing the surface area of a liquid have on its rate of condensation ?

Why does painting an object dull black maximise the rate of energy transfer ?

Why does trapping air in small pockets minimise the rate of energy transfer ?

The specific heat capacity of oil is 2100 J/kg degrees C. How much energy is needed to raise the temperature of 1 kg of oil by 1 degrees C ?

The specific heat capacity of water is 4200 J/kj degrees C. How much energy is needed to raise the temperature of 2kg of water by 1 degrees C ?

Why is fibreglass a good insulator ?

Why are the pipes that contain the water in a solar heating panel often painted black ?