What is it?What is it?Energy is the Energy is the ability to do ability to do work.work.

Work is Work is moving any moving any object.object.

Law of Conservation of Law of Conservation of EnergyEnergy..

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

Light Light ThermalThermal

MechanicalMechanical

SoundSoundChemicalChemical

ElectricalElectrical

Just remember MELTS + CJust remember MELTS + C

Mechanical EnergyMechanical EnergyMechanicalMechanical energy is the energy energy is the energy associated with the associated with the motion motion oror movementmovement of an object. of an object.

Examples: Examples: a frog leapinga frog leaping, , a car movinga car moving

Electrical Energy Electrical energy is energy associated with moving electric

charges. Example: energy in power lines, or devices that use

electrical energy to power them

Light EnergyLight Energy

Movement of light waves.

What examples do you see?

Thermal EnergyThermal Energy ThermalThermal (or heat) (or heat) energy is a measure of the energy of energy is a measure of the energy of

the movement of the movement of particlesparticles (molecules) in an object. (molecules) in an object.

Example: ice cream melting, frying an egg

Sound EnergySound EnergyMovement of Movement of sound waves.sound waves.

What examples do you see?

Chemical EnergyChemical Energy Produced Produced

through a through a chemical chemical reaction.reaction.

Ex. the food you Ex. the food you eat, gasoline, eat, gasoline, batteriesbatteries

BatteryBattery

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

3-2-13-2-1 Respond to the following:Respond to the following:

33 – 3 things in the room that have – 3 things in the room that have electrical energy at the momentelectrical energy at the moment

22 – 2 things in the room that have – 2 things in the room that have light energy at the momentlight energy at the moment

11 – 1 question you still have about – 1 question you still have about forms of energy.forms of energy.

Transformations Between Forms of Transformations Between Forms of EnergyEnergy

• A change from one form of A change from one form of energy to another is called energy to another is called an energy an energy transformationtransformation..

• Example: a toaster Example: a toaster converts converts electricalelectrical energy energy into into thermalthermal energy energy

•Playing an instrument involves:having the energy in your body > moving your fingers > creating sound.

CHEMICAL (through digestion) > MECHANICAL (muscles) > SOUND

Transformations Between Forms of Transformations Between Forms of EnergyEnergy

•How is the energy How is the energy transforming?transforming?

________ ________________ ________

Transformations Between Forms of Transformations Between Forms of EnergyEnergy

•How is the energy How is the energy transforming?transforming?

________ ________________ ________