5th grade ch. 13 lesson 4 what are simple machines
Post on 11-May-2015
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Ch. 13Lesson 4
What are simple machines?
machine•device that changes the direction or the amount of force needed to do work
6 kinds of
inclined plane• slanting surface that connects a lower level to a higher level
inclined plane
screw• inclined plane wrapped around a center post
screw
wedge
lever•stiff bar that rests on a fulcrum
lever
lever
wheel and axle• ex: doorknob• wheel=knob• axle=post that
attaches to its center
wheel and axle
pulley • changes the direction of motion to which a force is applied
pulley
complex machine- made of more than 1 simple machine
complex machine
Edheads-Simple Machines
Simple Machines Game
• Simple Machines game• http://staff.harrisonburg.k12.va.us/
%7Emwampole/1-resources/simple-machines/index.html
• http://sunshine.chpc.utah.edu/javalabs/java12/machine/index.htm
• http://www.galaxy.net/~k12/machines/index.shtml • http://www.quia.com/pages/
hostetterscience.html#simple • How can we move our principal game
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