1. Energy
Heat
Light
Sound
Kim Lachler
updated 2015
NCES 6.P.1

2. What is Energy?
the ability to work

3. So what is work?
when a force causes an object to move in the direction of the force.
Work = force X distance
Energy is transferred from the first object to the second object, so that it can do work.

4. How is energy measured? Energy is measured in Joules (J)
(1 J = amount of energy it takes to lift an object
that weighs pounds {1 Newton} 1 meter)

5. Three main types of energy
Kinetic Energy
energy in motion
Kinetic energy = mv2 2
m = mass v = velocity

6. Three main types of energy
Potential energy
energy an object has because of its position
Gravitational potential energy – the force of gravity working on an object
Gravitational potential energy = weight x height
Elastic potential energy – energy stored in a stretched rubber band

7. Three main types of energy
Mechanical energy
total energy of motion and position of an object
Mechanical energy = potential energy + kinetic energy
The mechanical energy remains the same.
As potential energy increases the kinetic energy decrease.
Or as the potential energy decreases the kinetic energy increases

8. 6 other forms of energy Thermal energy
kinetic energy due to random motion of particles that make up an object

9. 6 other forms of energy Chemical energy
potential energy based on the arrangement of atoms

10. 6 other forms of energy Electrical energy
potential energy based on moving electrons being ready to be used

11. 6 other forms of energy Sound energy
potential energy changing to kinetic energy through vibrations

12. 6 other forms of energy Light energy
Similar to sound energy - potential energy changing to kinetic energy through vibrations

13. 6 other forms of energy Nuclear energy
Nucleus of atoms contain huge amounts of potential energy

14. Nasa, electromagnetic spectrum http://imagine. gsfc. nasa
Nasa, electromagnetic spectrum accessed 12/16/2010
Media College. COM, How Sound Waves Work, accessed 12/16/2010
Cool Cosmos, What is Heat?. accessed 12/16/2010
KEEP, What is Energy?, accessed 12/17/2010
Discovery Education, Clip Art Gallery, accessed 12/17/2010
Holt,Rinehart and Winsteon, North Carolina Holt Science & Technology, Holt,Rinehart and Winsteon, New York, 2005
Discovery Education, accessed 12/28/2010