first vocab definitions 1-26-10
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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| A quantity that describes the capacity to do work; a source of usable power. | Energy
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| A change of energy from one form to another (e.g., Mechanical to Electrical, Solar to Electrical. | Energy Transfer
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| A form of energy resulting from the temperature difference between a system and its surroundings. | Heat
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| The energy possessed by a body because of its motion. | Kinetic Energy
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| The energy an object has because of its position or structure;stored energy. | Potential Energy
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| The bouncing off of or turning back of light, sound, or heat from a surface. | Reflection
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| A change in direction of a wave that occurs as it passes from one medium to another of different density. | Refraction
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| In any periodic function (e.g., a wave) the maximum absolute variation of the function. | Amplitude
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| Unit of energy; the amount of heat needed to raise one gram of water one degree Celsius at standard atmospheric pressure. | Calorie
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| The transmission of heat through a medium without the motion of the medium. | Conduction
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| Heat transfer in a gas or liquid by the circulation of currents from one region to another. | Convection
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| The change in direction of a wave caused by passing by an obstacle or traveling through an opening. | Diffraction
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| The relative effectiveness of a system or device determined by comparing input and output. | Efficiency
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| A measure of randomness or disorder of a closed system. | Entropy
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| The number of cycles or waves per unit of time. | Frequency
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| Emission of energy in the form of rays or waves. | Radiation
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| Internal energy found by adding the kinetic energy of partials making up a substance. | Thermal energy
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| The lowest point on a wave. | Trough
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| A repetitive around an equilibrium point. | Vibration
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| The distance between crests of a wave. | Wavelength
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