Making Things WorkMaking Things Work

Melody Wright Melody Wright

44thth grade Power Point grade Power Point

ECE 8842, section 4ECE 8842, section 4

Table of ContentsTable of Contents Georgia Performance Georgia Performance

StandardsStandards Types of Simple Machines Types of Simple Machines

OrganizerOrganizer Inclined PlaneInclined Plane

types of inclined planestypes of inclined planes WedgeWedge

types of wedgestypes of wedges LeversLevers

types of leverstypes of levers ScrewsScrews

types of screwstypes of screws PulleysPulleys

types of pulleystypes of pulleys Wheels and axlesWheels and axles

types of wheels and axlestypes of wheels and axles

Other Types of Simple Other Types of Simple MachinesMachines

Simple Machines in Our Simple Machines in Our HomesHomes

Simple Machines at WorkSimple Machines at Work Pulleys and Inclined PlanesPulleys and Inclined Planes LeversLevers

ResourcesResources How Do You Move a Lion?How Do You Move a Lion? Closing SlideClosing Slide

Georgia Performance StandardGeorgia Performance Standard

S4P3. Students will demonstrate the relationship between the application of a force and the resulting change in position and motion on an object.

a. Identify simple machines and explain their uses. (lever, pulley, wedge, inclined plane, screw, wheel and axle)

Types of MachinesTypes of Machines

wedge

InclinedPlane

Wheel andAxle

screw

Lever

pulley

6 types of Simple Machines

Inclined PlaneInclined Plane

An inclined plane is An inclined plane is a flat surface set at a flat surface set at an angle to another an angle to another surface. surface.

Where do you find Where do you find inclined planes?inclined planes?

How might you use How might you use an inclined plane?an inclined plane?

Inclined PlaneInclined Plane

An inclined plane is used to make moving things up and down easier.

Inclined planes are ramps, slides, and stairs; many others, too.

WedgeWedge A wedge is two A wedge is two

inclined planes stuck inclined planes stuck back to back. back to back. A wedge is wide at one end and tapers to a point at the other.

Where might you find Where might you find wedges?wedges?

How might you use a How might you use a wedge?wedge?

WedgeWedge

Knives, doorstops, saws and scissors are all types of wedges.

Wedges are used to separate things by cutting, piercing, or splitting the objects.

LeversLevers A lever is a bar that A lever is a bar that

moves on or moves on or around a fixed around a fixed point. point.

Where do you find Where do you find levers?levers?

How can you use a How can you use a lever?lever?

LeversLeversLevers, levers everywhere!

A lever is used for raising or moving heavy objects.

See-saws, push bars, hammers, bottle openers, and pop-tops on soda cans are all levers!

ScrewScrew

A screw is an A screw is an inclined plane that inclined plane that curves around a curves around a pole.pole.

Where do we find Where do we find screws?screws?

How do we use How do we use screws?screws?

ScrewScrewA screw is used to hold things together.

Screws are all around us! Bottle tops, bolts, and even the end of light bulbs are all types of screws!

PulleyPulley

A pulley is a rope A pulley is a rope over a wheel. It over a wheel. It changes the changes the direction of the direction of the force you use.force you use.

Where do we find Where do we find pulleys?pulleys?

PulleyPulley

A pulley makes it easier to move objects up, down, and across a long distance. The more pulleys you combine, the less force you need to move an object.

A flagpole is a type of pulley.

Wheel and AxleWheel and Axle

A wheel and axle is A wheel and axle is a machine that has a machine that has a bar through the a bar through the middle of a wheel.middle of a wheel.

Where do we find Where do we find wheels and axles?wheels and axles?

Why do we use Why do we use wheels and axles?wheels and axles?

Wheel and AxleWheel and AxleWhen the wheel is turned, the axle turns, too.

Doorknobs, tape dispensers, pencil sharpeners, and automobiles all use wheels and axles.

Other Examples ofOther Examples of Simple Machines Simple Machines

InclineInclined planed plane

WedgWedgee

LeversLevers ScrewScrew PulleyPulleyWheel Wheel and and axleaxle

slideslide kitchen kitchen

knifeknifelight light

switchswitch

tornado tornado slideslide

cranescranes pizzapizza

cuttercutter

wheel-wheel-chair chair rampramp

doorstopdoorstopbroombroom

Coke Coke bottle bottle

toptopsailboasailboa

tt

sailssails

fishingfishing

polepole

Simple Machines in Our Simple Machines in Our HousesHouses

0

5

10

15

20

25

screws wedges inclinedplanes

wheels andaxles

pulleys levers

screw s

w edges

inclined planes

w heels and axles

pulleys

levers

Annie’s House Anthony’s House

Simple Machines at WorkSimple Machines at Work

Pulleys and Inclined Planes

More Simple Machines More Simple Machines at Workat Work

Levers

ResourcesResourcesWebsites

http://edheads.org http://home.earthlink.net/~kandyhig/sm/ www.harcourtschool.com/activity/machines/simple_machines.htm www.kidskonnect.com/SimpleMachines/SimpleMachinesHome.htm

l http://www.hep.uiuc.edu/home/mats/wg2004.html

Books Simple Machines by Allan Fowler The Wheeling and Whirling Around Book

by Judy Hindley How Do You Lift a Lion? By Robert E. Wells (see

the book cover on the next slide)Back to table of contents

Don’t you just

Simple Machines?!