ENERGY

We rely on the energy stored in food to keep us alive and on the energy locked with in fuels to drive our machines and industries.energy is the ability to make things happen,whether it is moving something,heating at up,or changing it in some way. energy

exists in many different forms,including electricity,sound,heat,and light.All energy is either kinetic energy is the energy of moving objects,while potential energy is energy that stored,redy for use.Energy is measured in units called jouls(J)Potential energy:An object may gain potential energy if its position or condition alters.A bungee jumper standing at the top of the bridge has potential energy as it is potential to fall back to earth.When he jumps,his bungee rope gains potential energy as it stretches, because it has the potential to pull him back up again.