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.
We all get energy from the food we eat. The form of energy that is in food is called chemical energy. Our bodies use this energy to grow and move. Batteries also use chemical energy. Small machines such as flashlights, use the chemical energy in batteries. Chemical energy also makes cars go, too. Cars use the chemical energy from gasoline. Reinforcing the lesson. Use the printable student sheet below to help students reinforce what theyâve learned about the forms of energy.