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.
Letâs look at a few examples of energy use: 1  When we eat food, our body uses (chemical) energy embodied in the food to move around. 2  When we switch3 on the TV, electricity4 (kinetic energy5) is used to create the picture on the screen and the sound.