Flashcards
Temperature and Energy change
Cards in this deck (3)
- 1Introduction- 17th to 19th century: Heat was sustance that flowed from hot to cold objects- called "phlogiston" Caloric" and cold was knownas "frigoric".
-James joule(1840) temp of substance increased by doing worl on oit and it is equivalent to heating. Paddle experiment- if water churned with paddle so increased temp of water.
- calorie theorey abadoned now used word only for food energy. - 2Temperature and Energy transfer--Temperature- degree of hotness of object- relates to our senses. comparing hot pot water to refrigerator water.
--Relative temperature decides which direction energy will flow- from hot to cold until reach same temperature- thermal equilibrium.
--Energy flows due to conduction, convection and radiation- called heat.
--Temperature is scalar quantity- measured in celsius or Kelvin. - 3Thermometers
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- Flashcards on Temperature and Energy change, created by panktiparikh99 on 22/11/2015.
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