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Heat Transfer!

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Heat Transfer! How does Heat get transferred from one thing to another? Heat Transfer Table Type of Heat Transfer Definition Transfer Medium Example Picture or Symbol ... – PowerPoint PPT presentation

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Title: Heat Transfer!


1
Heat Transfer!
  • How does Heat get transferred from one thing to
    another?

2
Heat Transfer Table
Type of Heat Transfer Definition Transfer Medium Example Picture or Symbol
Conduction
Convection
Radiation
3
Conduction Definition
  • Heat Transfer through Direct Contact
  • Heat is transferred by touching
  • The d in Conduction goes with the D in Direct
    Contact

4
Conduction Transfer Mediums
  • Solids
  • Liquids
  • Gases

5
Conduction Examples
  • Solid Eggs frying in a pan
  • Eggs are touching the pan the
  • pan is touching the heat source
  • Liquid Hot H2O Cold H2O Warm H2O
  • The hot H2O molecules touch the cold H2O
    molecules and make them warm
  • Gas Steam heats the air
  • The steam released touches the air molecules
  • and heats them up

6
Conduction Pic/Symbol
7
Convection Definition
  • Heat Transfer through Convection Currents
  • Convection Currents

8
Convection Transfer Medium
  • Liquids
  • Gases

9
Convection Examples
  • Warming of a pool
  • Warming of a room
  • Warming of the Earth
  • Warming of a body of waterriver, lake, ocean,
    etc.

10
Convection Pic/Symbol
11
Radiation Definition
  • Heat Transfer by radiation waves
  • Moving subatomic particles
  • Electromagnetic Radiation

12
Radiation Transfer Mediums
  • Empty Space
  • Air

13
Radiation Examples
  • Heat radiating from the sun
  • Heat radiating from a fire
  • Ex) UV light from the sun, campfire, etc.

14
Radiation Pic/Symbol
15
Heat Transfer Table
Type of Heat Transfer Definition Transfer Medium Example Picture or Symbol
Conduction Direct Contact Touch Solids Liquids Gases Cooking Eggs Frying in a Pan
Convection Convection Currents Liquids Gases Warming a room or a pool
Radiation Radiation Waves Gases Empty Space Heat from the Sun or a Fire
16
Temperature Scales
  • Fahrenheit Scale
  • Most commonly used in the US. 32 degrees is the
    temperature at which water freezes and 212
    degrees is when water boils.
  • Celsius Scale
  • Most commonly used all over the world. 0 degrees
    is the temperature at which water freezes and 100
    degrees is when water boils.

17
  • Kelvin Scale
  • The temperature scale most commonly used in
    Physical Science. The temperature that water
    freezes at is 273 degrees and boils at 373
    degrees. Absolute zero is -273 C and 0 kelvin.
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