What is Energy?

What are the different forms
of Energy?
What is Energy?

• The ability to do work
Can you make
things move?
• Then you have
energy…
• …but there are seven
different kinds of
energy…
1. Heat Energy
• The random motion, or
vibration, of atoms in
matter
• The faster the atoms
vibrate the more heat
energy t...
2. Chemical Energy
• What holds atoms in
molecules together
• Can be released by
chemical reactions like
burning wood
3. Electrical Energy
• The movement of
electrons through
matter
• Electricity is a form of
electrical energy
4. Light Energy
• The energy carried by
light
• Yes, whenever you are
looking at light, you are
looking at energy
5. Mechanical
Energy
• The energy of moving
things
• When you ride a bike
you use mechanical
energy
6. Nuclear Energy
• Holds protons and
neutrons together in an
atom’s nucleus
• Powers the sun and
nuclear power plants
(re...
7. Sound Energy
• Vibrates air molecules
• The air molecules move
tiny bones in your ear
• The message of sound
then moves...
The Law of Conservation
of Energy:
Energy can change form,
but can’t be created nor
destroyed.
So energy is always conserv...
Chemical energy in
gasoline is changed to
heat energy and then to
mechanical energy in a
car.
Mechanical energy to sound energy
and some lost thermal energy
Kinetic energy to electrical energy
Chemical energy stored in
explosives is transferred to the
surroundings as thermal energy,
sound energy and kinetic
energy...
Chemical energy to potential energy
and kinetic energy
Electrical energy to sound energy
and some lost thermal energy
The battery transfers stored
chemical energy as
electrical energy. The
electrical energy is transferred
to the surrounding...
Energy
transfer
Nuclear energy to thermal energy
For 9th grade physics, chapter 6 "Energy transformations and energy transfers"
For 9th grade physics, chapter 6 "Energy transformations and energy transfers"
For 9th grade physics, chapter 6 "Energy transformations and energy transfers"
For 9th grade physics, chapter 6 "Energy transformations and energy transfers"
For 9th grade physics, chapter 6 "Energy transformations and energy transfers"
For 9th grade physics, chapter 6 "Energy transformations and energy transfers"
For 9th grade physics, chapter 6 "Energy transformations and energy transfers"
For 9th grade physics, chapter 6 "Energy transformations and energy transfers"
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For 9th grade physics, chapter 6 "Energy transformations and energy transfers"

  1. 1. What is Energy? What are the different forms of Energy?
  2. 2. What is Energy? • The ability to do work
  3. 3. Can you make things move? • Then you have energy… • …but there are seven different kinds of energy…
  4. 4. 1. Heat Energy • The random motion, or vibration, of atoms in matter • The faster the atoms vibrate the more heat energy they have
  5. 5. 2. Chemical Energy • What holds atoms in molecules together • Can be released by chemical reactions like burning wood
  6. 6. 3. Electrical Energy • The movement of electrons through matter • Electricity is a form of electrical energy
  7. 7. 4. Light Energy • The energy carried by light • Yes, whenever you are looking at light, you are looking at energy
  8. 8. 5. Mechanical Energy • The energy of moving things • When you ride a bike you use mechanical energy
  9. 9. 6. Nuclear Energy • Holds protons and neutrons together in an atom’s nucleus • Powers the sun and nuclear power plants (reactors)
  10. 10. 7. Sound Energy • Vibrates air molecules • The air molecules move tiny bones in your ear • The message of sound then moves to your brain • Can also vibrate objects
  11. 11. The Law of Conservation of Energy: Energy can change form, but can’t be created nor destroyed. So energy is always conserved, it is never "lost" or "wasted“.
  12. 12. Chemical energy in gasoline is changed to heat energy and then to mechanical energy in a car.
  13. 13. Mechanical energy to sound energy and some lost thermal energy
  14. 14. Kinetic energy to electrical energy
  15. 15. Chemical energy stored in explosives is transferred to the surroundings as thermal energy, sound energy and kinetic energy.
  16. 16. Chemical energy to potential energy and kinetic energy
  17. 17. Electrical energy to sound energy and some lost thermal energy
  18. 18. The battery transfers stored chemical energy as electrical energy. The electrical energy is transferred to the surroundings by the lamp as light energy and thermal
  19. 19. Energy transfer
  20. 20. Nuclear energy to thermal energy
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