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Published byGerald Nelson Modified over 9 years ago
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Temperature Section1
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Temperature Scales Fahrenheit ( ◦ F ) Celsius ( ◦ C ) Kelvin ( K )
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What temperature really is Atoms are in constant motion, even in a solid object. The back-and-forth jiggling of atoms is caused by thermal energy, which is a kind of kinetic energy.
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Terms to Learn Temperature: is a measure of the average kinetic energy of the particles in an object Thermal expansion: is the increase in volume of a substance due to an increase in temperature. Absolute zero: the lowest temperature on the Kelvin Scale
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MORE ABOUT THERMAL EXPANSION Thermal expansion joints are built into bridges so that when it gets hot the bridge does not buckle due to thermal expansion. Cars make a thuh- thunk noise when they go over these on a bridge.
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TEMPERATURE Temperature is an average measure. The temperature of a substance is not determined by how much of the substance you have.
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Converting to Kelvin The Kelvin temperature scale is useful in science because it starts at absolute zero. Is the official SI temperature scale
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Absolute zero Absolute zero is -273°C. You cannot have a temperature lower than absolute zero. Think of absolute zero as the temperature at which atoms are “frozen.”
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Fahrenheit Measured in degrees Water boils at….. Water freezes at…..
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Celsius Measured in degrees Scale is divided into 100 equal parts between the freezing point and the boiling point Water boils at….. Water freezes at …..
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TEMPERATURE CONVERSIONS To Convert From:Use this equation: ° C → ° F° F = (9/5 × ° C) + 32 ° F → ° C° C = 5/9 (° F – 32) ° C → K K = ° C + 273 K → ° C ° C = K - 273
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