Simple Machines
Grade 3 SOL
There are six different types of simple machines
Lever
It is used to push, pull or lift things.
Examples: see-saw, shovel, crowbar
Inclined Plane
It can help to move heavy objects up or down.
Example: ramp
Wedge
It is used to help cut or split other objects.
Examples: axe, knife
Wheel and Axle
It makes it easier to turn or move things.
Examples: bicycle wheels, roller skates, door knob
Screw
It is used to hold objects together.
Examples: jar lid, wood screw
Pulley
It is used to lift heavy objects.
Examples: flagpole, zip line
Compound machines
Examples: scissors, wheelbarrow, bicycle
Sources
http://www.glogster.com/cieramonet/screw-a-simple-machine-/g-6me16ace5r4vst24pc3bpa0
http://quizlet.com/4956658/simple-machines-flash-cards/
http://www.glogster.com/dlj/period-1-simple-machines-wedge/g-6lleap5llcdal9r1q88gma0
https://researchthetopic.wikispaces.com/What+is+a+lever%3F+Part+3
http://www.doe.virginia.gov/testing/sol/standards_docs/science/2010/curriculum_framewk/science3.pdf