Energy and Machines
How We Work and Play
Work is...
the result of force moving an object.
Force is...
a push.
Force is...
a pull.
Two Kinds of Energy
Potential Kinetic
Potential energy is...
stored energy.
Kinetic energy is...
energy in motion.
Energy can be…
electrical
mechanical chemical
Electrical energy is...
a result of electricity.
Mechanical energy is...
the energy of moving objects.
Chemical energy is...
is stored in matter.
When two objects rub or touch, there is...
Friction will...
slow down an
object. stop an object.
When an object is still it tends to remain ...
When an object is in motion it tends to stay ...
This is the property of ...
A simple machine ...
has few or no moving parts.
Types of Simple Machines
Lever screw
inclined
wheel and
plane wedge
axle pulley
A compound machine is ...
a combination of two or more simple machines.