A direct, simple explanation of the basic machines that make up the tools in our society.

1. Simple Machines! Angela Bergsma Central Michigan University

2. Simple Machines… Make work easier, but require the same amount of effort. Use energy supplied by the user. Have few or no moving parts.

3. 6 Simple Machines… Lever Inclined Plane Wheel and Axel Screw Wedge Pulley

4. Levers Long stiff arm that rests and moves on a base called a fulcrum. fulcrum Levers lift and move heavy objects.

5. Inclined Planes Slanted platforms that connect high and low places. Uses less effort but increases space moved.

6. Wheel and Axel Wheel that spins around a rod. Wheel Axel Lifts or moves loads.

7. Screw Long cylinder wrapped with threads. Threads The threads hold objects together.

8. Wedge Has at least 1 slanting side and ends in a sharp edge or point. Cuts materials or holds them apart.

9. Pulley Uses a rope that fits into a wheel to move objects. Force By pulling on one side, you raise the object on the other side.

10. Complex Machines Complex machines are made from combining simple machines. screws wheel and axel pulley

11. Simple Machines at Home! Screws Wedge

12. Inclined Plane Lever

13. Wheel and Axle Pulley

14. Simple machines help us do work and play!

15. Images: Slide 10: www.flickr.com/photos/kr2/415957295/ from kennethalan Slide 11: www.flickr.com/photos/kimmo-quva/4176512966/ from KimmoPalosaari. (Screws) www.flickr.com/photos/sis/106836361/ from Sister72 (Wedge) Slide 12: www.flickr.com/photos/22863752@N06/2787237955/ from di the huntress (Lever) www.flickr.com/photos/acidcookie/168518455/ from anne.oeldorfhirsch (Inclined Plane) Slide 13: www.flickr.com/photos/baccharus/3412305312/ from Milestoned (Wheel) www.flickr.com/photos/krossbow/3174794741/ from krossbow (Pulley) Diagrams: created by Angela Bergsma. Information from: www.atlantis.coe.uh.edu/archive/science/science_lessons/scienceles1/finalhome.htm www.mikids.com/Smachines.htm