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24 Cards in this Set
- Front
- Back
Conduction |
the transfer of thermal energy from object to object or particle to particle where there is physical contact |
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Conductor |
a material that permits the flow of heat |
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Convection |
the transfer of thermal energy by the movement of a fluid |
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Efficiency |
the percentage of the input work that is converted to output work |
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Electric Field |
the area around a charged object called a source charge that exerts force on other charged objects |
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Energy |
the ability to do work or cause change |
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Force |
A push or a pull. |
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Friction |
the force that two surfaces exert on each other when they rub against each other |
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Heat |
the transfer of thermal energy from a warmer to a cooler object |
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Input Force |
the force you exert on a machine |
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Kinetic Energy |
energy that an object has due to its motion |
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Law of Conservation of Energy |
the rule that energy cannot be created or destroyed |
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Lubricant |
a substance such as oil or grease that reduces friction between moving surfaces |
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Machine |
a device that makes work easier by changing the amount of force exerted, the distance over which a force is exerted, or the direction in which a force is exerted |
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Mass |
the amount of matter in an object |
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Mechanical Advantage |
the number of times a machine increases a force exerted on it |
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Output Force |
the force exerted on an object by a machine |
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Potential Energy |
the energy an object has because of its position, condition, or the arrangement of its atoms and molecules |
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Radiation |
the transfer of energy through space by electromagnetic waves |
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Temperature |
the measure of the average kinetic energy of the particles of a substance |
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Thermal Energy |
the total internal kinetic energy of all the particles of an object |
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Thermal Insulator |
a material that does not permit the flow of heat |
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Weight |
a measure of the force of gravity acting on an object |
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Work |
force exerted on an object that causes it to move a certain distance |