1. 6.1Forms of Energy
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2. Videos Introduction to Rube Goldberg Ever.flv
Energy and Energy Transformations Wile E. Coyote and Roadrunner 3:11
Study Jams matter and energy

3. Energy Energy is the ability to cause change You use energy when you:
hit a softball
lift your book bag
set off fireworks
Eat

4. Living organisms need energy for growth and movement.

5. States of Energy Potential Energy stored energy
the object is not moving
Kinetic Energy
energy of motion
the object is moving

6. Forms of Potential Energy
Gravitational Potential Energy (GPE)
Elastic Potential Energy (EPE)
Chemical Potential Energy (CPE)

7. Gravitational Potential Energy
Potential energy is dependent on the position and interaction of an object.
The height and mass of an object determine it’s GPE.

8. Compare the GPE of Book A to Book B
Book B, because it has greater mass
Compare the GPE of Book A to Book C
Book A, because it is at a greater height
Which of the 3 books has the greatest GPE?
Book B, because it has the greatest mass and height

9. Elastic Potential Energy
Energy that is stored due to being stretched or compressed

10. Chemical Potential Energy
Some substances, such as food and fuel are made of atoms joined together in chemical bonds
CPE is stored in these bonds
and released when chemical reactions occur

11. Kinetic Energy
Kinetic energy depends on both the mass and speed of the object
The faster the speed ,the more kinetic energy.
The greater the mass of a moving object, the more kinetic energy it has.
(pg. 250)

12. Forms of Kinetic Energy
Mechanical
Thermal
Sound
Electric
Radiant/Light
Nuclear

13. Mechanical Energy
The sum of the potential energy and kinetic energy due to the motion and interactions of objects
When you do work it requires mechanical energy.
The object you are doing work on receives the energy.

14. Mechanical Energy
It requires mechanical energy for you to kick a football
The football receives the mechanical energy

15. Thermal (Heat)Energy
The sum of potential and kinetic energy of the small atomic particles that make up an object
Thermal energy moves from warmer objects to cooler objects

16. Radiant (Light)Energy
Energy carried by electromagnetic waves
The Sun, visible light, x-rays, and microwaves are all examples of radiant energy
Radiant energy can travel through space

17. Sound Energy
Sound is caused by vibrations carried through the air in by sound waves
Sound can not travel in a vacuum such as space

18. Electric Energy
The energy an electric current carries to another object
The object then transforms it into another form of energy

19. Nuclear Energy Stored in the nucleus of an atom
Nuclear energy is the most concentrated form of energy.
It is released under controlled conditions by splitting the nucleus of an atom

20. Energy ,Force, and Work
Energy is the ability to cause change and is measured Joules (J)
Force is a push or pull on an object and is measured in Newtons (N)

21. Work is the transfer of energy when a force is applied and it moves an object in the direction of the force

22. Work is measured in the Joules (J)
Work = force x distance
10N x 2m = 20J of Work