2. Nonrenewable energy is energy that comes from the ground and is not replaced in a relatively short amount of time. Fossil fuels are the main category of nonrenewable energy. Fossil fuels include; coal, oil and natural gas.

3.  A narrow piece of material, such as plastic, rubber, felt, or metal, installed around doors and windows to protect an interior from external extremes in temperature.

4.  The term thermal insulation can refer to materials used to reduce the rate of heat transfer, or the methods and processes used to reduce heat transfer. Heat energy can be transferred by conduction,...

5. a measure of the resistance of an insulating or building material to heat flow, expressed as R-11, R-20, and so on; the higher the number, the greater the resistance to heat flow. R value

6. the amount consumed: the high consumption of energy. Consumption