Heat and Heat Technology. Temperature  …is the measure of the average kinetic energy of the particles in an object.  - the faster the particles, the.

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Presentation transcript:

Heat and Heat Technology

Temperature  …is the measure of the average kinetic energy of the particles in an object.  - the faster the particles, the more kinetic energy.

Temp scales  Fahrenheit  English –Water FP -(32ºF)BP – (212ºF)  Celsius  metric  - Water FP – (0ºC)BP – (100ºC)  Kelvin  metric  - Water FP – (273K)BP – (373K)

The Lowest Point Possible  Absolute Zero – The point at which ALL molecular motion stops. (No molecules move.)  -0K or -273ºC

Heat  …Is the transfer of energy between objects that are different temperatures.  …Is ALWAYS transferred from areas of high temp. to area of low temp.  Soda can from fridge in your hand. (Energy goes from your hand to can.) Feels col  Cup of hodt tea in your hand. )Energy goes from cup to your hand.) Feels hot`

Thermal Energy  … is the total energy of the particles in a substance. Measured in Joules (J).  Depends on:  Temperature of substance  How much of the substance you have

Specific Heat  …is the amount of energy needed to raise the temperature of 1 kg of water 1ºC.  (We call this a calorie.)

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