Energy
What are potential and
kinetic energy?
First some review…
Write down the definition of
energy.
Write down the four of the
seven types of energy and an
example of each.
Energy…
…is the ability to make
things move
The seven types of energy…
Chemical - gasoline,
Light – flash light,
Heat – burner on a stove,
Nuclear - sun,
Mechanical - car,
Sound – music on the radio,
Electrical - lightning
Definitions
Kinetic Energy:
Energy: the energy
of motion
Potential Energy:
Energy: stored
energy
A Roller Coaster
A roller coaster speeds
along its track. It has
kinetic energy because it is
moving..
moving
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.
What type of energy is
this?
(Remember the seven types?)
Right, mechanical.
What if the cars
crashed and burned?
What type would it be?
Right, heat.
Substances like wood, coal,
oil, and gasoline have stored
energy because of their
chemistry – they can burn
Stored energy is potential
energy
Potential Energy can be
changed into Kinetic Energy
Also Kinetic Energy can be
changed into Potential
Energy