Even though metal is a good conductor, frost can be seen on parked cars in the early morning even when the air temperature is above freezing. Provide an explanation.

A number of bodies at different temperatures placed in a closed room share radiant energy and ultimately reach a common temperature. Would this thermal equilibrium be possible if good absorbers were poor emitters and poor absorbers were good emitters? Explain.

Since energy is radiated by all objects, why can't we see them in the dark?

Why does a good emitter of heat radiation appear black at room temperature?

Does a good insulator prevent heat from escaping or slow its passage?

Sunlight reaches us by travelling through empty space. What does that imply?

If you hold one end of a piece of metal against a piece of ice, the end in your hand soon becomes cold. Does cold flow from the ice to your hand? Explain.

In which form of heat transfer is a medium not required?

A snow-making machine used for ski areas blows a mixture of compressed air and water through a nozzle. The temperature of the mixture may initially be well above the freezing temperature of water, yet crystals of snow are formed as the mixture is ejected from the nozzle. Explain how this happens.

How are the speeds of molecules of air affected when the air is compressed by the action of a tire pump?

To save energy, some ceiling fans are reversible so that they drive air down or pull it up. In which direction should the fan drive the air during winter and in which direction during summer?

Ceiling fans can make you feel cooler in a warm room. Do ceiling fans reduce the room temperature?

If we warm a volume of air, it expands. Does it then follow that if we expand a volume of air, it warms? Explain.

At what common temperature will a block of wood and a block of metal both feel neither hot nor cold to the touch?