Science Vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Work | Force exerted on an object that causes it to move.
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| Simple Machines | A device that allows you to do work in a way easier and more effective.
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| Resistance | The object to be moved.
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| Effort | The amount of force applied to move an object.
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| Mechanical Advantage | The number of times a machine multiplies the input force of the machine. MA=Output Work/Input Work
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| Efficiency | The percentage of the input work that is converted to output work. Efficiency=Output Work/Input Work*100
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| Inclined Plane | A flat sloped surface used to help move an object.
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| Wedge | A device that is thick at one end and tapers to a thin edge at the other end.
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| Screw | An inclined plane wrapped around a cylinder.
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| Lever | A rigid bar that is free to pivot, ar rotate on a fixed point.
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| Wheel and Axle | A simple machine made of circular cylindrical objects fastened together that rotate about a common axis.
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| Pulley | A grooved wheel with a rope or cable wrapped around it.
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| Fixed Pulley | It does not change the amount of force needed. It changes direction.
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| Movable Pulley | It decreases amount of input force needed. It doesn't change the direction.
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| Compound Machines | A machine made out of two or more simple machines.
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Or sort by any of the columns using the down arrow next to any column heading.
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Created by:
RahulD
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