Simple Machines SOL 3 2 By Ms Weinberg

Simple Machines SOL 3. 2 By Ms. Weinberg Adapted by K. Green ITRT – Suffolk City Schools ©A. Weinberg

Simple machines are tools used to make work easier. ©A. Weinberg

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

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! ©A. Weinberg

There are 6 different types of simple machines: • (1)lever • (2)scre w • (3)pulley ©A. Weinberg • (4)wheel & axle • (5)inclined plane • (6)wedge

6 Simple Machines ©A. Weinberg

(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. ©A. Weinberg

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

(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. ©A. Weinberg

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…. ©A. Weinberg

(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. ©A. Weinberg

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

(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. ©A. Weinberg

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. ©A. Weinberg

(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. ©A. Weinberg

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). ©A. Weinberg

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

Examples of wedges: a knife or an ax ©A. Weinberg

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

Simple Machine Video & Quiz ©A. Weinberg

Simple Machine Websites • Information • More Links & Information • Ed. Head – Click the Green, Start Box • Dirt. Meister – Simple Machines ©A. Weinberg

These simple machines make work easier! Can you Name them? ©A. Weinberg

©A. Weinberg