Tape the ends of the track on opposing chairs so that the center hangs down to the floor like the letter U. Use masking tape to secure the bottom of the track to the surface that the track is laying on. Place a marble on one end of the track and let it roll down. This activity illustrates potential and kinetic energy. Keep a chart of each measurement. Energy is the ability of matter to move other matter or to produce a chemical change in other matter.
Scientists define energy as the ability to do work.
Work is defined by scientists as only being done when a force, which is usually a push or a pull, is moved through a distance. Mechanical energy is the form of energy that we see around us. All moving objects produce mechanical energy. Kinetic energy is the energy of motion. Potential energy is the energy that a substance or object has because of its condition or position.