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Energy Flows From Warmer To Cooler Objects

Energy Flows From Warmer To Cooler Objects. EQ: How is heat different than temperature?. Heat and Temperature . Heat – the flow of energy from an object at a higher temperature to an object at a lower temperature Heat always flows from the warmer object to the cooler object.

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Energy Flows From Warmer To Cooler Objects

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  1. Energy Flows From Warmer To Cooler Objects EQ: How is heat different than temperature?

  2. Heat and Temperature • Heat – the flow of energy from an object at a higher temperature to an object at a lower temperature • Heat always flows from the warmer object to the cooler object EQ: How is heat different than temperature?

  3. Heat and Temperature • Temperature – a measurement of the average kinetic energy of particles in an object EQ: How is heat different than temperature?

  4. hot liquid cold liquid Thermal Energy • The total random kinetic energy of particles in an object • Different from temperature in that temp is an average and thermal energy is a total EQ: How is heat different than temperature?

  5. Thermal Energy • Put ice in lemonade • Energy from warmer lemonade transfers to colder ice cube • Lemonade’s thermal energy decreases and the ice’s thermal energy increases • Particles in lemonade have transferred some of their energy to the ice particles EQ: How is heat different than temperature?

  6. heat ice Thermal Energy EQ: How is heat different than temperature? • Particles in lemonade have transferred some of their energy to the ice particles • Therefore the average kinetic energy of the lemonade decreases and the temperature of the lemonade decreases

  7. EQ: How is heat different than temperature? Measuring Heat • Calorie – the amount of energy needed to raise the temperature of one gram of water by 1° C • Joule (J) – the international standard of measurement for measuring energy. • 1 calorie = 4.18 joules

  8. Specific Heat • The amount of energy required to raise the temperature of 1 gram of a substance by 1°C • Every substance has its own heat value • Each substance absorbs a different amount of energy in order to show the same increase in temperature EQ: How is heat different than temperature?

  9. Class Work and Home Work Fill In What did I Learn Confused Say EQ: How is heat different than temperature? Read selection 2-2 Energy Flows from warmer to cooler objects Questions 1-6, p. B 48, “How Hot Is Hot” 1-3, plus the challenge question

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