7.1 & 8 vocab Word Scramble
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Definition | Term |
a nonsolid state of matter in which the atoms or molecules are free to move past each other | fluid |
the amount of force exerted per unit area of a surface | pressure |
the SI unit of pressure | pascal |
the pressure caused by the weight of the atmosphere | atmospheric pressure |
the transfer of energy to an object by using a force that causes the object to move in the direction of the force | work |
the unit used to express energy | joule |
the unit used to express power | watt |
the rate at which energy is transferred | power |
a device that helps do work by eiether overcoming a force or changing the direction of the applied force | machine |
the work done on a machine | work input |
the work done by a machine | work output |
a number that tells how many times a machine multiplies force | mechanical advantage |
a quantity, usually expressed by a percentage, that measures the ratie of work output by work input | mechanical effciency |
a simple machine that consists of a bar that pivots at a fixed point called a fulcrum | lever |
simple machine that consists of two circular objects at different sizes | wheel & axle |
a simple machine that consists of a wheel over which a rope, chain, or wire passes | pulley |
a simple machine that is a straight, slated surface, which facilitates the raising of loads | inclined plane |
a simple machine that is made up of two inclined planes an that moves; often used for cutting | wedge |
a simple machine that consists of an inclined plane wrapped around a cylinder | screw |
a machine made of more than one simple machine | compound machine |
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kfran0112
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