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Heat, Thermal Energy, and Temperature

Heat, Thermal Energy, and Temperature. HOT. COLD. What is Heat?. The measurement of Energy that flows from something with a higher temperature to something with a lower temperature. What is Thermal Energy?. It is the measurement of the TOTAL kinetic energy of the particles of matter.

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Heat, Thermal Energy, and Temperature

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  1. Heat, Thermal Energy, and Temperature

  2. HOT COLD What is Heat? • The measurement of Energy that flows from something with a higher temperature to something with a lower temperature.

  3. What is Thermal Energy? • It is the measurement of the TOTAL kinetic energy of the particles of matter.

  4. What is Temperature? • It is the measurement of the AVERAGE kinetic energy of the particles of matter.

  5. Temperature Scales • To construct a thermometer scale: 1) Select Two naturally occurringfixed events • Freezing and Boiling Point of water are normally chosen. 2) Then numbers are assigned to these points 3) Then the space in-between is divided into a fixed number of equal degrees.

  6. The 3 main temperature scales Fahrenheit Celsius Kelvin Temperature Scales

  7. Uses of the Scales • Fahrenheit scale is used for engineering and Household purposes. • Celsius scale is universally used for ALL scientific measurements

  8. The Fahrenheit Scale • Daniel G. Fahrenheit (1686-1736) He was a German Physicist who invented: Alcohol Thermometer in 1709 Mercury Thermometer in 1714. • The Fahrenheit Scale in 1724

  9. The Fahrenheit Scale • The fixed points on which he created the Fahrenheit scale were: A mixture of ice water and salt as the low AND The human body temperature as the high.

  10. °F Scale cont. • Boiling point became = ________ • Freezing point became = _________ 212 0F 32 0F

  11. Celsius Scale • The fixed points on which this scale was created, were the Boiling and Freezing point of water. • Original scale had boiling point = 0 • And the freezing point = 100

  12. Celsius Scale • These were later reversed so the • Boiling Point = 1000C • Freezing Point = 00C • The original name was the CENTIGRADE scale • In 1948 it was renamed in honor of the original creator, Anders Celsius (1701 – 1744)

  13. Kelvin Scale • Named for William Thomson (1824 – 1907) • He became Lord Kelvin of Largs in 1892 • His scale is based on the temperature at which ALL molecular movement STOPS.

  14. Kelvin Scale • This temperature is known as • Absolute Zero = 0 K • Boiling point of water = 373 K • Freezing point of water = 273 K • ABSOLUTE ZERO

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