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. SIMPLE ENERGY CONVERSIONS
A change from one form of energy to
another is called an energy conversion.
Any form of energy can be converted
Into any other form of energy.

26. ENERGY CONVERTING FROM
POTENTIAL TO KINETIC
MAX
PE.
MAX
PE.
MAX
KE.

27. CHEMICAL ENERGY CONVERSIONS I think therefore I convert energy
1. Chemical energy in food is converted to ………
2. Mechanical energy when you are moving,
3. Heat as a result of the movement to maintain body temperature (homeostasis)
I think therefore I convert energy
Chemical  mechanical  thermal (heat)

28. Chemical Energy Conversions
Examples of Other
Chemical Energy Conversions
Batteries(chemical) light heatsound
Gas(chemical)  mechanicalheatsound
Chemical to ?

29. Lighting: electricallightheat
Most of the energy is converted to heat. Only a small percentage of the original energy is converted into light energy. Heat causes the air to move very rapidly which in turn causes sound.

30. All electrical appliances are converting electricity.
Electrical Energy Conversions
All electrical appliances are converting electricity.
Name several examples of electrical conversions.

31. MECHANICAL ENERGY CONVERSIONS
Movement causes friction which causes heat. Mechanical can turn into mechanical again.
Bike: mechanical  mechanical thermal  sound

32. THERE HAS TO BE AN ENERGY CHANGE TO MAKE THINGS HAPPEN!
ENERGY CONVERSIONS

33. 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.

34. Two Types of Energy Resources: Renewable & Nonrenewable
Energy Resources – a natural resource that can be converted into energy for use by humans.
Two Types of Energy Resources:
Renewable & Nonrenewable

35. Renewable Resource – an energy resource that can be replaced in a short amount of time.
WATER
WIND
GEOTHERMAL
BIOMASS

36. Renewable Resources: Water- rivers (dams) a. Hoover Dam- Nevada
Wind- moving air (windmills)
b. Great Plains
Geothermal- hot springs, geysers (inside Earth)
Yellowstone, parts of KY
4. Biomass- corn, ethanol, vegetable oils, wood
d. Everywhere

37. Nonrenewable Resources – cannot be replaced after use or takes millions of years to replace.
Fossil Fuels – energy resources that are formed from plants and animals that lived millions of years ago

38. Non-renewable Resources – Fossil Fuel
Natural Gas
Coal
SUN!!!
Petroleum
(Oil)

39. Non Renewable Resources:
Coal- fossilized plants and animals (power plants)
a. KY, VA, WV
Natural Gas- gas deposits in the Earth (pipelines)
b. Great Plains
Petroleum- hot springs, geysers (oil rigs)
Gulf of Mexico, Middle East
4. Sun- radiant energy (solar panels)
d. Everywhere

40. Many simple energy conversions put together.
COMPLEX
ENERGY CONVERSIONS
Many simple energy conversions put together.
Converting energy from the sun to make it available for use at your home.

41. Complex Energy Conversions
All energy originates (starts) with the SUN!!!!
HOW CAN WE MAKE ENERGY FROM THE SUN USEABLE????
The energy conversions involved with the sun are:
Nuclear  light  thermal (heat)
How can we use the light energy given from the sun on earth?

42. Complex Energy Conversions
_________

43. FOSSIL FUEL ENERGY TRANSFER
Plants die
Become coal
Nuclear to
Light
Light to
Chemical
Chemical
To Chemical
Chemical
Burn the
Coal – Chemical tothermal
Power plant
Electrical
Mechanical
(turn turbines)
Electromagnetic (light)

44. NUCLEAR ENERGY
Nuclear power plants do the same job as fossil fuel powered plants. They use nuclear energy to power the turbines that make the electricity.

45. Solar Energy
Light energy from the Sun is converted to electrical energy for use in our homes.
Disadvantage: Sun is not really a renewable resource.
Advantage: Readily available as of now in all areas of the world.
Area of the World = Deserts, plains areas, any area with abundant sunlight.
Arizona, Mexico, California

46. Hydroelectric (Water) Energy
Mechanical energy from water in rivers is converted to electrical power with dams.
Disadvantage: Expensive upkeep of dams.
Advantage: Readily available to those that already have dams in place.
Area of the World = Hoover Dam most well known in our country.

47. Wind Energy
Mechanical energy from wind is converted to electrical power using wind turbines.
Disadvantage: Expensive and depends on how land is laid out.
Advantage: Readily available to those that already have wind turbines in place.
Area of the World = Great Plains, Kansas, Oklahoma.

48. Geothermal Energy
Thermal energy from within the Earth that can be converted to usable energy.
Disadvantage: Land dependent, not available to everyone.
Advantage: Cost effective.
Area of the World = Iceland, Wyoming, Yellowstone National Park.

49. Biomass Energy
Chemical energy in plant and animal waste can be converted to usable energy in the form of methane, ethanol, bio-diesel, etc.
Disadvantage: Does use some food resources increasing prices for these items.
Advantage: Readily available.
Area of the World = Most places.

50. ELECTRICAL ENERGY CONVERSIONS
Nuclear to
Thermal
Mechanical to
Mechanical
Thermal to
Mechanical
Electrical to
Heat
Electrical
Pretty

53. f

55. 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.

56. 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.