how is energy lost

Well for heating and cooling it would be through our windows, the T.V looses energy through the screen because the monitor on the T.V that uses and needs the energy the most and even light bulbs because almost half of its energy is half wasted through heat energy. No when energy goes away it is only being changed into matter. EX: gasoline can be used to create certain gases and electricity. Energy is being created from matter. Then the electricity is used to give power to a lamp. The electricity is being converted into heat and light energy.