Historic time capsule found at Washington Monument. Before you go, we thought you'd like these... BALTIMORE (WBAL) -A piece of history has been discovered in Baltimore. The original cornerstone of the Washington Monument in Baltimore, thought to be long lost, was discovered last week while crews dug for a sewage tank.
We divide our energy use among four economic sectors: residential, commercial, transportation, and industrial. Heating and cooling our homes, lighting office buildings, driving cars and moving freight, and manufacturing the products we rely on in our daily lives are all functions that require energy.
Solar energy is a form of light energy: it is light from the sun. The energy put into your car engine is chemical energy(petrol or diesel). When the engine is running, the chemical energy in the petrol (or diesel) is converted into kinetic energy (movement), heat energy and sound energy. As I said you can use your common sense.