1. ENERGY

2. Energy – The ability to do work
How is energy involved in the following picture?
The tennis player does work
On her racket
The racket does work on the
ball
The ball does work on the
net
Energy Video

3. Increase Mass Increase K.E. Increase Velocity Increase K.E.
STATES OF ENERGY
1. Kinetic -
The energy of motion, when energy is being transferred.
The faster the motion, the more kinetic
energy it has. The bigger the mass, the more
Kinetic energy it has.
Depends on mass and velocity
Increase Mass Increase K.E.
Increase Velocity Increase K.E.

4. Why would a high speed collision cause more damage than a low speed collision?

5. Stored Energy or energy that is waiting to be transferred.
STATES OF ENERGY
Stored Energy or energy
that is waiting to be
transferred.
2. Potential -
-Object is not moving or doing work. BUT… the shape or position of the object can change the amount of potential energy.
-When work is done on an object, potential energy is stored.
-Has the ability to turn into kinetic energy.

7. What type of energy does each
Picture demonstrate?
Kinetic – When you Swing hammer
Potential
Potential
Kinetic

9. The Roller Coaster

12. 7 Forms of Energy

13. FORMS OF ENERGY Mechanical – Energy associated with
motion, anything moving.
POTENTIAL OR KINETIC
Examples of mechanical energy

14. FORMS OF ENERGY 2. Thermal – Heat Energy Is Kinetic
Results from friction, causes temperature
and phase changes, ALL OTHER TYPES of energy TURN INTO THIS.
Solid to Liquid Liquid to Gas

15. FORMS OF ENERGY Chemical – Energy that is released as a result
of molecular bonds being broken.
A Form of Potential Energy
Examples: All forms of fuel (gasoline, coal, wood, food, radioactive materials) Photosynthesis, batteries.

16. Chemical Energy in this picture?
What are examples of
Chemical Energy in this picture?
1. Wood Burning; chemical energy stored in the wood is used to toast your marshmallows
2. Chemical energy is stored in the marshmallow’s sugar molecules.
When you eat a marshmallow,
chemical energy stored becomes
available for you to use.

17. FORMS OF ENERGY Electrical Energy – Energy of moving electrons. Is
always kinetic.
The electrical outlets
in your home allow
you to use electrical
energy

18. FORMS OF ENERGY
Sound – Caused by an object’s vibrations Can also be considered mechanical.
Is potential and kinetic
Example: Guitar Strings Vibrating
Is potential and kinetic

19. Light – Produced by the vibrations of electrically charged particle that are visible. Is kinetic.
LIGHT IS ELECTROMAGNETIC
ENERGY

20. Electromagnetic Spectrum

21. Other Examples of Electromagnetic Energy
Microwave
Infrared
Radio Waves
X-Rays

22. FORMS OF ENERGY Nuclear – energy associated with changes
in the nucleus of an atom.
Is potential.
Examples:
Sun’s Energy Nuclear Power Plant

23. WHICH FORM OF ENERGY IS REPRESENTED
IN EACH PICTURE?

24. Energy is that "certain something" inside stuff (or matter to be more precise) that makes everything happen. When something or somebody moves or jumps or falls or explodes or breathes or thinks or dances or does anything, it's because energy is being transformed.

25. CONSERVATION OF ENERGY
The Law of Conservation of Energy states
that when one form of energy is converted into
another form of energy, no energy is destroyed in the process.
Energy cannot be Created or Destroyed.

26. BELLRINGERS Define potential and kinetic energy.
Name the 7 types of energy and give an example of each.
Which energy types are potential? Which are kinetic? Which are both?
Explain the energy tranformations from the sun to your alarm clock.
Explain the energy transformations from the sun to you riding a bike.
Explain the energy transformations as a pendulum swings.
Define renewable and nonrenewable resources and give an example of each.

27. Bellringer #2 The energy conversion involved with photosynthesis is:
a. Nuclear to light to heat to chemical
b. Light to chemical
c. Chemical to light
The energy conversion involved with a flashlight is:
a. Electrical to light to heat
b. Chemical to electrical to light to heat
c. Light to heat
The Law of Conservation of Energy states that in energy conversions:
a. Energy is used up during conversions
b. Energy is not transferred from one form to another.
c. Energy is neither created or destroyed only changed from one form to another with no energy loss.