What is it Energy is the ability to

What is it? Energy is the ability to do work. Work is moving any object.

Law of Conservation of Energy cannot be created or destroyed, but it can transform from one form to another.

Mechanical – movement of parts Sound – movement of sound waves Chemical – produced by chemical reactions Electrical – movement of electrons Light – movement of light waves Thermal – movement of molecules Nuclear – changes in the nucleus

Turn to your neighbor and discuss these questions: 1. What do all of the forms of energy have in common? 2. What makes each form of energy different?

Mechanical Energy Movement of parts. http: //gtmmedia. discoveryeduc ation. com/videos/Ex ploring%20 Energy/s ec 4946_300 k. asf

Sound Energy Movement of sound waves.

Chemical Energy. n n Produced through a chemical reaction. http: //gtmmedia. discoveryeducation. c om/videos/Exploring%20 En ergy/sec 4948_300 k. asf

Battery n Batteries are all over the place -- in our cars, our PCs, laptops, portable MP 3 players and cell phones. A battery is essentially a can full of chemicals that produce electrons.

Look at the picture below. Why is the person in the background wearing protective clothing?

Electrical Energy. Movement of electricity. n occurs naturally (as in lightning) n or is produced (power plant) n http: //gtmmedia. discoveryeducation. com /videos/Exploring%20 Energy/s ec 4949_300 k. asf

Light Energy Movement of light waves.

Thermal Energy Movement of molecules http: //streaming. discov eryeducation. com/vid eos/Exploring Energy/sec 4947_300 k. asf

3 -2 -1 Talk n Respond n to the following: 3 – 3 forms of energy found in objects in this classroom n 2 – 2 things in the room that do not have energy in this classroom n 1 – 1 question you still have about forms of energy.

• When energy is used, it changes from one form to another. • This change of energy is called an ENERGY TRANSFORMATION • i. e. : Playing an instrument involves: having the energy in your body > moving your fingers > creating sound. CHEMICAL (through digestion) > MECHANICAL (muscles) > SOUND