Energy and machines
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Energy and Machines PowerPoint PPT Presentation


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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

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Energy and Machines

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Energy and machines

Energy and Machines

How We Work and Play


Work is

Work is...

the result of force moving an object.


Force is

Force is...

a push.


Force is1

Force is...

a pull.


Two kinds of energy

Two Kinds of Energy

  • Potential

  • Kinetic


Potential energy is

Potential energy is...

stored energy.


Kinetic energy is

Kinetic energy is...

energy in motion.


Energy can be

Energy can be…

  • electrical

  • mechanical

  • chemical


Electrical energy is

Electrical energy is...

a result of electricity.


Mechanical energy is

Mechanical energy is...

the energy of moving objects.


Chemical energy is

Chemical energy is...

is stored in matter.


When two objects rub or touch there is

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

friction!


Friction will

Friction will...

  • slow down an object.

  • stop an object.


When an object is still it tends to remain

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

still.


When an object is in motion it tends to stay

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

in motion.


This is the property of

This is the property of ...

inertia!


A simple machine

A simple machine ...

has few or no moving parts.


Types of simple machines

Lever

inclined plane

wedge

screw

wheel and axle

pulley

Types of Simple Machines


A compound machine is

A compound machine is ...

a combination of two or more simple machines.


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