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Title:

Energy

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Title: Potential and Kinetic Energy Author: melissa.marshall Last modified by: Windows User Created Date: 8/10/2007 12:00:02 AM Document presentation format – PowerPoint PPT presentation

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Title: Energy


1
Energy
  • is the ability to make things move/ do work

2
Potential and Kinetic Energy
3
Definitions
  • Kinetic Energy the energy of motion
  • Potential Energy stored energy

4
The types of energy
  • Potential
  • Chemical - gasoline,
  • Gravitational Gravity
  • Elastic rubber band
  • Kinetic
  • Light flash light,
  • Heat burner on a stove,
  • Nuclear - sun,
  • Mechanical - car,
  • Sound music on the radio,
  • Electrical - lightning

5
What is Potential Energy?
  • Energy that is stored and waiting to be used later

6
What is Gravitational Potential Energy?
  • Potential energy due to an objects position
  • P.E. mass x
  • height x gravity

Dont look down, Rover! Good boy!
7
What is Elastic Potential Energy?
  • Potential energy due compression or expansion of
    an elastic object.

Notice the ball compressing and expanding
8
What is Chemical Potential Energy?
  • Potential energy stored within the chemical bonds
    of an object

9
What is Kinetic Energy?
  • Energy an object has due to its motion
  • K.E. .5(mass x speed2)

10
A Roller Coaster
  • A roller coaster speeds along its track. It
    has kinetic energy because it is moving.

11
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12
A Roller Coaster
  • As it slows to a stop at the top of a hill, it
    has potential energy because of where it is. It
    has the potential to move because it is above the
    ground and has somewhere to go.

13
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14
LAW OF CONSERVATION OF ENERGY
Energy can not be created or destroyed only
transferred!!!!
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