Presentation is loading. Please wait.

Presentation is loading. Please wait.

HEAT TRANSFERS. HEAT TRANSFER - the transfer of thermal energy between substances due to a difference in their temperature.

Similar presentations


Presentation on theme: "HEAT TRANSFERS. HEAT TRANSFER - the transfer of thermal energy between substances due to a difference in their temperature."— Presentation transcript:

1 HEAT TRANSFERS

2 HEAT TRANSFER - the transfer of thermal energy between substances due to a difference in their temperature

3 THERMAL ENERGY is the total of all the kinetic and potential energy of all the particles in a substance.

4 TEMPERATURE is a measurement of the average kinetic energy of the molecules in an object. It is measured with a thermometer. It is a measurement of the internal energy contained in an object.

5 As the temperature increases, so does thermal energy (because the kinetic energy of the particles increased).

6 The flow of thermal energy (HEAT) always flows from warmer to cooler objects Cup gets cooler while hand gets warmer Ice gets warmer while hand gets cooler

7 Questions 1. What is thermal energy? 2. How do you measure thermal energy? 3. What is heat? 4. How does thermal energy flow?

8 Insert video clip – conduction, convection & radiation

9 CONDUCTION is the transfer of heat through a material by direct contact.

10 CONVECTION is the transfer of heat in a fluid (gas or liquid) as a result of the movement of the fluid itself

11 RADIATION is the transfer of heat via electromagnetic waves through space

12 How Are They Alike? ConductionConvectionRadiation

13 How Are They Different? ConductionConvectionRadiation

14 Conduction, Convection, or Radiation? The spoon is too hot to touch after sitting in the hot soup.

15 Conduction, Convection, or Radiation? The moon’s surface becomes hot.

16 Conduction, Convection, or Radiation? Your feet hurt after walking barefoot across the beach

17 Conduction, Convection, or Radiation? Bacon cooks in the frying pan

18 Conduction, Convection, or Radiation? The room becomes warm when the furnace is turned on

19


Download ppt "HEAT TRANSFERS. HEAT TRANSFER - the transfer of thermal energy between substances due to a difference in their temperature."

Similar presentations


Ads by Google