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Heat and Temperature

Heat and Temperature. By Tommy Heydinger. Overview by Mr. Edmonds. Difference between heat and temperature. http:// www.youtube.com / watch?v =_M7U7_N3wBc. Temperature . Temperature: Quantity that can be measured. Celsius, Fahrenheit, Kelvin Absolute zero 0°C = 273 K 100°C = 373 K.

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Heat and Temperature

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  1. Heat and Temperature By Tommy Heydinger

  2. Overview by Mr. Edmonds • Difference between heat and temperature. • http://www.youtube.com/watch?v=_M7U7_N3wBc

  3. Temperature Temperature: Quantity that can be measured. Celsius, Fahrenheit, Kelvin Absolute zero 0°C = 273 K 100°C = 373 K

  4. Conversions • Fahrenheit  Celsius • TC= 5/9 (TF– 32.0) • Celsius  Fahrenheit • TF = (9/5 × TC) + 32.0

  5. Kelvin Temperature Scale • Scientific significance. • Similarities of Kelvin and Celsius Scales • 0°C = 273.15 K • Kelvin Temp. • T = TC + 273.15

  6. Linear Thermal Expansion • Definition • Coefficient of expansion • Change in Length=(Original Length)(coefficient of expansion)(change in temperature) • SI unit for coefficient of expansion- °C-1

  7. Bimetallic Strip • Two thin strips of metal. • Brass and Steel • Uses and reactions.

  8. Area Expansion • Explanation • Change in Area= 2(original area)(coefficient of linear expansion)(Change in temperature) • Demonstration

  9. Volume Expansion • Definition • Change in volume= (original volume)(coefficient of volume expansion) ✖(change in temperature) • β=Coefficient of volume expansion

  10. Specific Heat • Transfer of Energy • Specific Heat • Joule per kilogram degree Celsius (J/kg°C) • Change in Heat= (mass)(specific heat)(change in temperature) • Specific heat of water = 5187 J/kg°C

  11. Heat of Fusion • Explanation • Change in heat=(mass)(heat of fusion) • SI unit= J/kg • Water heat of fusion=3.35 ✖ 105 J

  12. Heat of Vaporization • Explanation • Change in heat = (mass)(heat of vaporization) • SI unit= J/kg • Water heat of vaporization = 2.26 ✖ 106 J/kg

  13. Conduction • Transfer of heat • Direct Contact • Poor conductors • Wood, paper, air • Strong conductors • Copper, silver, iron

  14. Convection • Up and down movement of gases and liquids. • Heat rises, cool air falls • Examples • Hot air balloon • Lower floors in a building. • Lakes/pools

  15. Radiation • Electromagnetic Waves • Transfer of heat • Examples • Microwave • Lightbulb • Fire

  16. Bibliography • http://www.youtube.com/watch?v=_M7U7_N3wBc • Cutnell and Johnson, Physics Sixth Edition • Packet 11, Temperature and Heat. • http://www.wisc-online.com/Objects/ViewObject.aspx?ID=sce304

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