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18 Cards in this Set
- Front
- Back
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Work |
occurs when a force exerted on an object causes that object to move some distance; work =force x distance. |
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Potential energy |
stored energy in an object due to its position. |
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Kinetic energy |
energy an object has due to its motion. |
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Current electricity |
electricity that flows through a circuit, or a continuous unbro-ken path; electrons flowing from one point to another. |
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Resistance |
the measure of how difficult it is for electrons to flow through a materi-al; measured in ohms (Ω). |
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Generator |
a devise that used a magnetic field to turn kinetic energy into electricalenergy and can produce direct current and alternating current. |
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Efficiency |
useful work per quantity of energy; efficiency = [output work ÷ inputwork] x 100 |
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Friction |
The force of two surfaces that touch. |
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Motion energy |
movement of objects and substances from one place to another. |
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Electrical energy |
the movement of electrical charges. |
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Sound energy |
the movement of energy through substances in longitudinal waves. |
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Radiant energy |
electromagnetic energy that travels in transverse waves. |
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Thermal energy |
the internal energy in a substance caused by friction due to the vi-bration of atoms and molecules. |
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Chemical energy: |
energy stored in the bonds of atoms and molecules. |
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Nuclear energy |
energy stored in the nucleus of an atom. |
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Gravitational energy |
the energy an object has due to its position or height above theground. |
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Stored mechanical energy |
energy stored in an object by the application of a force. |
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Law of Conservation of Energy |
states that energy can not be created or destroyed;it can only change form. |
