1. Energy is… The ability to cause motion or create change.
There are different types of energy around us.
Energy cannot be created or destroyed. It is simply changed from one form to another.

2. Forms of Energy Light Energy Heat Energy Sound Energy
Energy that travels in electromagnetic
waves and does not require a medium.
Heat Energy
Energy produced from the movement of molecules from high to low temperatures .
Sound Energy
Energy produced by
sound vibrations.
Electrical Energy
Energy produced from the flow of an
electric current through a conductor.
There are several forms of energy. I’ll give you a brief overview of the most common forms of energy. Light energy is energy that travels in waves and does not require a medium. Light from a theater spotlight is an example of light energy. Sound energy is energy produced by vibrations, like when you listen to music on a pair of headphones. Energy involved in the reaction of molecules is called chemical energy and is exhibited through the use of a battery. Electrical energy is produced from the flow of an electric current through a conductor. Take an electricity pole for example. Mechanical Energy is energy gained from the motion or position of an object. Let’s study each form of energy more in depth.
Chemical Energy
Energy involved in the
reaction of molecules.
Mechanical Energy
Energy gained by the physical
movement of an object.

3. Light Energy Reflected Refracted Absorbed What happens to light waves
Light energy is energy that travels in electromagnetic waves and may travel in space. Light travels in a straight line until it strikes an object or travels from one type of material to another.
What happens to light waves
when they strike an object?
Reflected
Refracted
Light energy is energy that travels in electromagnetic waves and may travel in space. Light travels in a straight line until it strikes an object. Light can also travel from one type of material to another. When light hits a surface, it can be reflected, refracted, or absorbed. When light moves from one form of matter to another, it appears to bend or refract. A quick demonstration can illustrate the bending nature of light. Take a pencil and place it into a glass of water. You will see that the pencil appears to bend at the point where it leaves the air (gas) and enters the liquid. Of course, the pencil does not actually bend, the light just makes it look that way. Light can also reflect or bounce back from the surface of some materials, like a mirror for instance. Finally, some materials have the ability to absorb light.
Absorbed

4. Heat Energy Conduction Convection Radiation Types of Heat Transfers
Heat energy is energy produced from the movement of molecules. Heat (thermal) energy is transferred from one substance to another, from the substance with the warmer (higher) temperature to the substance with the cooler (lower) temperature.
Types of Heat Transfers
Conduction
Convection
Radiation

5. Electrical Energy
Electrical energy (electricity) is produced from the flow of an electric current through a conductor.
Electrical energy (electricity) is another common form of energy. It is produced from the flow of an electric current through a conductor. Humans have discovered how to harness the power of electricity and store the electrical charge for everyday use. Electricity has come to be a vital part of our daily lives. Electrical energy is used to power many of the things that we use every day including the television, computer, telephone, stove, and washing machine for instance.

6. Chemical Energy Energy involved in the reaction of molecules
CHEMICAL REACTION
BATTERIES
GASOLINE
FOOD
The energy involved in the reaction of molecules is called chemical energy and is exhibited through the use of food, fossil fuels, and batteries. Food stores chemical energy that gives our bodies the energy it needs to survive. The chemical energy in batteries powers our cars, cell phones, and hand-held gaming systems. Among the fossil fuels that give us chemical energy is coal burned to provide power, gasoline combusted in automobiles, and natural gas used to supply heat to buildings.
COAL

7. Mechanical Energy
Energy gained by the physical movement in position of an object.
Mechanical Energy is energy gained by the physical movement in position of an object. Mechanical energy is the energy used in walking, running, swimming, bike riding and all other types of physical activity. Mechanical energy is also commonly associated with the energy required for the movement in position of machine parts. The functioning of all machines including: a moving car, a sewing machine, and even an elevator involve mechanical energy. Any object that exhibits a change in motion and position uses this form of energy.

8. Six types of energy: Electrical energy:
Energy caused by the movement of electrically charged particles.
When you flip on a light switch or use the toaster, you are using electrical energy. Electricity flows through the device to power them.
What are two ways you use electrical energy every day?

9. Six types of energy: Thermal energy:
Energy due to randomly moving particles that make up matter.
You can feel the flow of thermal energy as heat. The faster the particles move, the more thermal energy is produced.
People use thermal energy to heat or cook food. The thermal energy causes change in the food as it cooks.
How can you use your hands to make heat?

10. Six types of energy: Sound energy:
The energy of vibrations carried by air, water, or other matter.
You use sound energy hen your alarm clock wakes you up, or when you listen to your favorite music.
How could electrical energy be transferred to sound energy?

11. Six types of energy: Kinetic energy: The energy of motion.
Anything moving has this kind of energy. A moving swing at the play ground or a hurricane both have kinetic energy.

12. Six types of energy: Potential energy:
Energy that is stored in an object.
When an object is in motion, its potential energy is released as other forms of energy.
For example, when a truck burns fuel, the potential energy in gasoline is released as sound, heat, and motion.
The engines in cars change the potential energy in gasoline to heat and kinetic energy by burning a mixture of fuel and air. What is a result of this change?

13. Potential energy…what kinds?
There are three types of potential energy:
Gravitational….what word do you see?
Chemical – energy comes from chemicals changing and creating fuel
Elastic – When something is stretched, it has potential energy, such as a bouncy ball or rubber band!
So, when does a ball have gravitational potential energy?
What forms of energy does a rocking chair use when rocking back and forth?

14. Six types of energy: Light energy:
Travels as waves and can move through empty space.
Some light energy comes from the sun and travels to Earth.
Flowers use the light energy to help make their own food.
How could light energy from the sun enter your body?