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

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Presentation on theme: "What is it? Energy is the ability to do work. Work is moving any object."— Presentation transcript:

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

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

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

5 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?

6 Mechanical Energy Movement of parts. http://gtm- media.discoveryeduc ation.com/videos/Ex ploring%20Energy/s ec4946_300k.asf http://gtm- media.discoveryeduc ation.com/videos/Ex ploring%20Energy/s ec4946_300k.asf

7 Sound Energy Movement of sound waves.

8 Chemical Energy. Produced through a chemical reaction. Produced through a chemical reaction. http://gtm- media.discoveryeducation.c om/videos/Exploring%20En ergy/sec4948_300k.asf http://gtm- media.discoveryeducation.c om/videos/Exploring%20En ergy/sec4948_300k.asf http://gtm- media.discoveryeducation.c om/videos/Exploring%20En ergy/sec4948_300k.asf http://gtm- media.discoveryeducation.c om/videos/Exploring%20En ergy/sec4948_300k.asf

9 Battery Batteries are all over the place -- in our cars, our PCs, laptops, portable MP3 players and cell phones. A battery is essentially a can full of chemicals that produce electrons. Batteries are all over the place -- in our cars, our PCs, laptops, portable MP3 players and cell phones. A battery is essentially a can full of chemicals that produce electrons.carsPCslaptopsMP3 players cell phonescarsPCslaptopsMP3 players cell phones

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

11 Electrical Energy. Movement of electricity. occurs naturally (as in lightning) or is produced (power plant) http://gtm- media.discoveryeducation.com /videos/Exploring%20Energy/s ec4949_300k.asf http://gtm- media.discoveryeducation.com /videos/Exploring%20Energy/s ec4949_300k.asf

12 Light Energy Movement of light waves.

13 Thermal Energy Movement of molecules http://streaming.discov eryeducation.com/vid eos/Exploring Energy/sec4947_300k.asf http://streaming.discov eryeducation.com/vid eos/Exploring Energy/sec4947_300k.asf

14 3-2-1 Talk Respond to the following: Respond to the following: 3 – 3 forms of energy found in objects in this classroom 3 – 3 forms of energy found in objects in this classroom 2 – 2 things in the room that do not have energy in this classroom 2 – 2 things in the room that do not have energy in this classroom 1 – 1 question you still have about forms of energy. 1 – 1 question you still have about forms of energy.

15 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


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