Simple-Machines

Views:
 
Category: Entertainment
     
 

Presentation Description

No description available.

Comments

Presentation Transcript

PowerPoint Presentation:

Simple Machines SOL 3.2 By suleman

PowerPoint Presentation:

Simple machines are tools used to make work easier.

PowerPoint Presentation:

You have probably used some simple machines , but did not realize that they were actually called simple machines!

PowerPoint Presentation:

Simple machines do not make less work; they just make it easier to do work. It would be hard to cut this wood without the saw!

PowerPoint Presentation:

There are 6 different types of simple machines : (1)lever (2)screw (3)pulley (4)wheel & axle (5)inclined plane (6)wedge

PowerPoint Presentation:

(1) LEVER A lever is a stiff bar that moves about a fixed point ( fulcrum ). A lever is used to push, pull, or lift things.

PowerPoint Presentation:

A shovel is an example of a lever. A seesaw is another example of a lever .

PowerPoint Presentation:

(2) SCREW A screw is an inclined plane wrapped around a cylinder or cone. A common use of the screw is to hold objects together.

PowerPoint Presentation:

A jar lid and a wood screw are examples of a screw. So far we have learned about 2 types of simple machines: levers & screws….

PowerPoint Presentation:

(3) PULLEY A pulley is a wheel that has a rope wrapped around it. Pulleys can be used to lift heavy objects by changing the direction or amount of the force.

PowerPoint Presentation:

A flagpole uses a pulley to raise the flag. Now we have learned about 3 types of simple machines: levers, screws, and pulleys…..

PowerPoint Presentation:

(4) WHEEL & AXLE A wheel & axle consists of a rod attached to a wheel. A wheel & axle makes it easier to move or turn things.

PowerPoint Presentation:

A bicycle wheel, roller skates, and a doorknob are all examples of a wheel & axle. We now know about 4 types of simple machines: levers, screws, pulleys, and wheels & axles.

PowerPoint Presentation:

(5) INCLINED PLANE An inclined plane is a flat surface that is raised so that one end is higher than the other. An inclined plane helps move heavy objects up or down.

PowerPoint Presentation:

A ramp is an example of an inclined plane. Let’s add inclined plane to our list of simple machines (along with levers, screws, pulleys, and wheels & axles).

PowerPoint Presentation:

(6) WEDGE A wedge is wide at one end and pointed at the other to help cut or split other objects.

PowerPoint Presentation:

Examples of wedges: a knife or an ax

PowerPoint Presentation:

Now you know about the 6 types of simple machines : (1) LEVER (2) SCREW (6) WEDGE (3) PULLEY (4) WHEEL & AXLE (5) INCLINED PLANE

PowerPoint Presentation:

These simple machines make work easier!

PowerPoint Presentation:

The End!

authorStream Live Help