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Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics
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Thermodynamics

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  • 1. + T = Hint: It s the quantity of thermal energy given-off by a body He
  • 2. + ature = Hint: The measure of the hotness or coldness of a body
  • 3. + + namics = Hint: A branch of physics die no "s"
  • 4. Prepared by: MR. LAURO A. CALIVA HEAT and TEMPERATURE
  • 5. Heat and Temperature
    • THERMAL ENERGY is the kinetic energy characterized by the randomness of motion at the atomic and molecular levels of a body.
    • HEAT is the quantity of thermal energy absorbed or given-off by a body.
    • TEMPERATURE is the measure of hotness or coldness of a body.
  • 6. Heat and Temperature
    • THERMODYNAMICS is a branch of physics concerned with the mechanical work, pressure, temperature and their roles in the transformation of energy.
  • 7. ACTIVITY TIME
  • 8. Sources of Heat
    • Natural Sources
      • The Sun
      • The Earth’s Interior
    • Artificial Sources
      • Chemical Action
      • Electrical Energy
      • Mechanical Energy
      • Nuclear Energy
  • 9. Measure of Heat
    • THERMOMETER is any thermal sensor that measures temperature.
    • The lines of a thermometer are called CALIBRATIONS .
    • LIQUID-IN-GLASS THERMOMETER ROTARY THERMOMETER , THERMOCOUPLE THERMOMETER and LIQUID CRYSTAL THERMOMETER are a few examples.
  • 10. 1. LIQUID-IN-GLASS THERMOMETER
    • Consists of a glass tube with a bulb on one end.
    • The glass bulb contains a liquid (mercury or alcohol) that expands and narrows up.
  • 11. 2. ROTARY THERMOMETER
    • Consists of coiled bimetallic strips.
    • One strip is brass and the other is iron-made.
    • The metals expand at different rates.
  • 12. 3. THERMOCOUPLE THERMOMETER
    • An electronic thermometer.
    • It operates under the principle of measuring changes in electric signal.
    • It consists of two wires of different metals joined together at the ends to form junctions, and a display (to show the temperature).
  • 13. 3. LIQUID CRYSTAL THERMOMETER
    • Consists of a strip of liquid crystals that changes color with temperature.
    • Convenient to use but not very accurate.
  • 14. TEMPERATURE SCALES
    • In CELSIUS SCALE , the freezing point of water is 0 while the boiling point is 100 degrees Celsius.
    • In FAHRENHEIT SCALE , the freezing point of water is 32 while the boiling point 212 degrees Fahrenheit .
  • 15. TEMPERATURE SCALES
    • In KELVIN SCALE, the freezing point of water is 273 K while the boiling point of water is 373 K.
  • 16.  

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