Forms of Energy

1. Forms of Energy Big Idea 10 and 11

2. Forms of energy • ____ ________ ___________ ______ • TV turns on bicycle moves food digests • toaster pops top spins nail rusts • computer powers up bowling pin falls battery turns on flashlight • iPod plays faucet turns on log rots • cell phone recharges pinwheel turns wood burns

3. What is Energy? • Energy is the ability to cause change. • Change in matter • Change in temperature

4. Energy… • Energy can never be created nor destroyed….energy can be transformed from one form to another.

5. Potential & Kinetic • Energy an object has because of their position or condition is POTENTIAL ENERGY (PE). • Energy an object has because of its motion is KINETIC ENERGY (KE).

6. MECHANICAL • The total energy of motion and position on an object is mechanical energy. • PE + KE = ME

7. SOUND • Form of energy carried through waves in vibrating matter • It is a type of kinetic energy because particles are moving.

8. Thermal/HEAT • Particles are moving, therefore a type of kinetic energy

9. Light • Light is a form of energy that can travel through space and some types of matter like air or glass.

10. Electrical • Energy that is caused by the movement of electric charges

11. Chemical • Energy that is stored in matter and released by a chemical reaction. • Example: food, gas

12. Recap • ________ energy is the total kinetic energy of the particles in matter. • ________ energy is energy that can be released by a chemical reaction. • _______ energy is the form of energy that you can see. • ______ energy travels as waves through vibrating matter. • ____________ energy is the combination of the potential and kinetic energy an object contains. • __________ energy is energy caused by movement of electrical charge.

13. Choose the correct word • Energy is the ability to cause motion or create (matter/ change). • There are two main categories of energy- potential and (thermal/ kinetic). • Energy cant’s be created or (destroyed/ captured). • Energy can change from one form to another, which is called (transformation/ conservation).

14. What changes can energy cause? • Change in temperature • Change in matter

15. What is Electricity? • Electric charge is a property of a particle that affects how it behaves around other particles. • When an atom has an equal number of protons and electrons, the positive and negative charges cancel each other and the atom has no charge. • If an atom gains an electron it will have a charge of -1. • If an atom loses an electron it will have a charge of +1.

16. Electricity • Particles with the same charge repel (push away). • Particles with opposite charges attract (pull together). • Example: static electricity is a build up of charges. Dryer. Car, zapping a person, lightning

17. Electricity • Electric current • Metals are good conductors because they contain electrons that move through easily.

18. Electricity_ genarator

19. How do electric changes interact?LESSON4 Repel Attract

20. charged COMB

21. How do we use electricity? • Candle vs. Lamp • Hand saw vs. circular saw • Gramophone vs. ipod • Hand fan to electric fan • Megaphone to electric speaker

22. Electromagnet • Current produces magnetism

23. Generator vs. Electric motor • It is the opposite of an electric motor. • Electric motor.. Electric current passes through the coil producing a magnetic field that causes the shaft to rotate, then a blade or other things attached move. electric -> movement • In a generator movement of some outside source (wind or water) cause the magnet to move inside the coil of wire which generates an electric current. Movement ->electricity