1. Intro To Energy

2. Intro to Energy Energy- the ability to do work
Energy cannot be created or destroyed– only changed from one form into another form (Law of Conservation of Energy)
Energy appears in several different forms, we will be focusing on seven: mechanical, sound, chemical, radiant, thermal, electrical, and nuclear

3. States of Energy Energy has two states: Kinetic and Potential
Kinetic Energy (KE)- energy in motion that is actually doing work (ex: a ball rolling down a hill)
Potential Energy (PE)- stored energy that is waiting to work (ex: a rubber band)

4. Types of Energy
Mechanical Energy- energy associated with motion and movement Ex: cars, skateboards, a frog jumping, a moving stream

5. Types of Energy
Sound Energy-is produced when an object is made to vibrate.
1. Sound energy travels out as waves in all directions.
2. Sound needs a medium to travel through, such as air, water, wood, and even metal
Ex: Voices, whistles, horns, and musical instruments.

6. Types of Energy
Chemical Energy- energy stored in the bonds that hold atoms together
Ex: striking a match, gasoline combusting to propel cars, digesting food to gain energy, combining vinegar and baking soda to form CO2 gas

7. Types of Energy
Radiant (light) Energy- is a combination of heat and light energy. Radiant energy, like sound energy, travels out in all directions in waves.
Ex: A light bulb, the glowing coils on a toaster, the sun, the headlights on cars.

8. Types of Energy
Electrical Energy - Energy produced by electrons moving through a substance is known as electrical energy.
1. We mostly see electric energy in batteries and from the outlets in our homes.
Ex: CD players, TVs and video games.

9. Types of Energy
Thermal (heat) Energy- associated with the motion of the particles that make up all matter
When the motion of the particles increases, the amount of thermal energy produced also increases
Ex: ice cream melting, water boiling away

10. Types of Energy
Nuclear Energy- potential energy stored in the nucleus of atoms
-- When a nucleus splits apart, a tremendous amount of energy is released
Ex: atomic bombs, nuclear power plants, nuclear submarines, and the sun.

11. Classwork
Fill out the Graphic Organizer and place it as page 3 of your notebook
Start working on the Energy Illustrations Worksheet– it will be page 4 of your notebook