Simple Machines

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# Simple Machines - PowerPoint PPT Presentation

Simple Machines. By Ashby Morell Clip Art from Microsoft Office 2007. State Standards. Science: GLE 0107.Inq.1 Observe the world of familiar objects using the senses and tools

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### Simple Machines

By Ashby Morell

Clip Art from Microsoft Office 2007

State Standards
• Science:
• GLE 0107.Inq.1 Observe the world of familiar objects using the senses and tools
• 0107.T/E.1 Explain how simple tools are used to extend the senses, make life easier, and solve everyday problems.
Simple machines have very few parts.

There are six types of simple machines:

pulley

lever

wheel and axle

inclined plane

wedge

screw

A pulley is one type of simple machine.

A pulley uses a wheel and a rope to move heavy objects.

Can you think of other examples of pulleys?
• Did you say either of these:

A pulley that raises and lowers blinds.

The pulley that raises and lowers the flag on a flagpole.

A lever is a type of simple machine.
• A lever uses force to move something.
Here are some examples of levers.

bottle opener

seesaw

toilet flusher

Can you think of other examples of levers?
• Did you say either or these?

crowbar

scissors

A wheel and axle is a type of simple machine.
• The axle is the rod that holds the wheels together.
Here are some examples of wheel and axles.

pencil sharpener

rolling pin

ferris

wheel

Can you think of other examples of wheel and axels?

Did you say any of these?

skates

wagon

bicycle

The inclined plane is a simple machine.
• An inclined plane is a slanted surface that can be used to raise or lower things.
• An inclined plane does not move.
These are some examples of inclined planes.

boat

ramp

wheelchair ramp

hatchet

Can you think of other examples of inclined planes?
• Did you say any of these?

dump truck

roller

coaster

A wedge is a type of simple machine.
• A wedge is two inclined planes that are back to back.
• The difference between an inclined plane is that it does its work by staying still, while a wedge moves.
• Wedges hold things together or split things apart.
These are some examples of wedges.

A fork and a knife

screwdriver

golf club

Can you think of other examples of wedges?
• Did you say any of these?

ship

nail

teeth

A screw is a type of simple machine.
• A screw is an inclined plane that is wrapped around a cylinder with a flat head on one end.
• This head is used to turn or drive the screw into something.
These are some examples of wedges.

corkscrew

bottle lids

swivel stool

Can you think of other examples of screws?
• Did you say any of these?

doorlock

clamp

light bulb

As you can see, our world is made up of many simple machines. You can find examples any place you look.
• Simple machines solve the problem of how to do work faster and easier.
• Maybe you can invent a machine that will make some job faster and easier.