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Simple Machines

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<ul><ul><li>What is a simple machine? </li></ul></ul>It is a simple tool we use to make work easier.

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What is a lever? A lever is a bar that moves around a fixed point. How do we use it? Levers help us lift, pull, and push things.

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What is a wheel-and-axle? It is made up of a wheel that is connected to an axle and move together. How we we use it? Helps us move things.

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What is a pulley? A pulley is a wheel with a rope wrapped around it. How do we use it? Helps us move things up and down.

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What is an inclined plane? It is a flat surface with one side higher than the other. How do we use it? Helps us move up and down.

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What is a wedge? A wedge is two inclined planes placed back to back. How do we use it? To cut things.

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What is a screw? An inclined plane wrapped around a pole. How do we use it? To hold things together.

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<ul><li>Image Sources: </li></ul><ul><li>http://www.fi.edu/qa97/spotlight3/spotlight3.html </li></ul><ul><li>http://www.coolschool.ca/lor/SC9/unit16/U16L04/SimpleMachinesImages.jpg </li></ul><ul><li>http://www.rockingham.k12.va.us/sound_sorting/initial_blends/br/pages/broom.htm </li></ul><ul><li>http://www.wpclipart.com/tools/hammer/hammer_1.png </li></ul><ul><li>http://www.sbac.edu/~tpl/clipart/Toys/seesaw.jpg </li></ul><ul><li>http://library.thinkquest.org/CR0210120/Media/ferris </li></ul><ul><li>http://www.cartoonstock.com/newscartoons/cartoonists/cga/lowres/cgan628l.jpg </li></ul><ul><li>http://opkansas.org/_Assets/cm/media_photos/slide.jpg </li></ul><ul><li>http://library.thinkquest.org/J002079F/images/log_splitter_wedge.jpg </li></ul><ul><li>http://www.yourdictionary.com/images/ahd/jpg/A4screw.jpg </li></ul><ul><li>http://www.seawear.com/images/fish-hooks/shark-hook~102.jpg </li></ul>