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# Forms of Energy PowerPoint PPT Presentation

Forms of Energy. Big Idea 10 and 11. Forms of energy. ____ ____ ____ _______ ____ ______ TV turns on bicycle moves food digests toaster pops top spins nail rusts

Forms of Energy

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## Forms of Energy

Big Idea 10 and 11

### 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 rechargespinwheel turns wood burns

### What is Energy?

• Energy is the ability to cause change.

• Change in matter

• Change in temperature

### Energy…

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

### 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).

### MECHANICAL

• The total energy of motion and position on an object is mechanical energy.

• PE + KE = ME

### SOUND

• Form of energy carried through waves in vibrating matter

• It is a type of kinetic energy because particles are moving.

### Thermal/HEAT

• Particles are moving, therefore a type of kinetic energy

### Light

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

### Electrical

• Energy that is caused by the movement of electric charges

### Chemical

• Energy that is stored in matter and released by a chemical reaction.

• Example: food, gas

### 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.

### 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).

### What changes can energy cause?

• Change in temperature

• Change in matter

### 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.

### 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

### Electricity

• Electric current

• Metals are good conductors because they contain electrons that move through easily.

Repel

Attract

### 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

### Electromagnet

• Current produces magnetism

### 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