11 Heating the Earth

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1-1 Heating the Earth

• 4 main things that affects weather
• 1 Heat energy
• 2 Air pressure
• 3 Winds
• 4 Humidity

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Where does the energy go?

• 50 of the energy is
• Absorbed by ozone
• Reflected by water vapor
• Scattered by dust and vapor
• Absorbed by clouds

• The other 50 reaches the earth
• Absorbed by the earth.
• Reflected by the earth.

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Methods of Heat Transfer

• Conduction transfer heat from direct contact of
  substances. A small portion of heat transfer.

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• Convection transfer of heat throughout fluids
  based on
• density of liquid. Warm air rises, cool air
  replaces it.

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• Radiation transfer of heat between molecules
  with infrared and ultra-violet rays.

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Greenhouse effect

• The heat blanket of the earth
• U.V. rays enter the atmosphere.
• They strike the earth and change to infrared rays
  (heat energy)
• Infrared rays heat up the atmosphere.
• Anything made of carbon absorbs the energy.

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Temperature variations

• The curve of the earth creates unequal heating of
  the earth.
• The more direct the rays, the more intense the
  heating.
• What tool do you use to measure temperature?
• Thermometer