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Heat and Heat Technology

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 -(32 º F) BP – (212 º F) Celsius metric - Water FP – (0 º C) BP – (100 º C)

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Heat and Heat Technology

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  1. Heat and Heat Technology

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

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

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

  5. 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`

  6. 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

  7. 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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