Simple Machines 3rd Grade

Front

This has one or no moving parts.

Back

simple machine

Front

A wheel with a rope or belt around it. Helps a person lift or move something up, down, or across an area.

Back

pulley

Front

Often used to hold things together.

Back

screw

Front

-moves at the same time
-both parts turn to help a person move something

Back

wheel and axle

Front

-a ramp
-flat surface that is higher at one end. 
-helps a person move something up or down from one place to another

Back

inclined plane

Front

-a flat bar that rests on a fulcrum
-helps a person move or lift something
-example is a see-saw

Back

lever

Front

-object with a sharp edge
-helps spread or cut something

Back

wedge

Front

-object with a sharp edge
-helps spread or cut something

Back

wedge

Front

Example of using a simple machine to do work: a boy runs across a football field, a banker counts money, a mother pushes a stroller up a ramp, a girl eats a sandwich.

Back

a mother pushes a stroller up a ramp

Front

Characteristic of a simple machine?

Back

They have few or no moving parts.