Energy and Energy and MachinesMachines

How We How We Work and Work and

PlayPlay

Work is...Work is...

the result of force moving an object.

Force is...Force is...

a push.

Force is...Force is...

a pull.

Two Kinds of Two Kinds of EnergyEnergy

PotentialPotentialKineticKinetic

Potential energy Potential energy is...is...

stored energy.

Kinetic energy Kinetic energy is...is...

energy in motion.

Energy can be…Energy can be…

electricalelectricalmechanicalmechanicalchemicalchemical

Electrical energy Electrical energy is...is...

a result of electricity.

Mechanical energy Mechanical energy is...is...

the energy of moving objects.

Chemical energy Chemical energy is...is...

is stored in matter.

When two objects rub When two objects rub or touch, there is...or touch, there is...

Friction will...Friction will...

slow down an slow down an object.object.

stop an object.stop an object.

When an object is still When an object is still it tends to remain ...it tends to remain ...

When an object is in When an object is in motion it tends to motion it tends to stay ...stay ...

This is the property of This is the property of ......

A simple A simple machine ...machine ...

has few or no moving parts.

Types of Simple Types of Simple MachinesMachines

LeverLeverinclined inclined planeplane

wedgewedge

screwscrewwheel wheel and axleand axle

pulleypulley

A compound machine A compound machine is ...is ...

a combination of two or more simple machines.