Chapter 22 Section 2 Review Page 560

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Chapter 22 Section 2 Review Page 560
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Earths Atmosphere
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1. Explain how radiant energy reaches Earth.

• Radiation from the sun travels through space in
  the form of electromagnetic waves.

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2. List and describe the types of
electromagnetic waves.

• Long wavelength TV/radio waves, microwave,
  infrared, and visible light
• Short wavelength UV rays, X rays, Gamma Rays

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Electromagnetic Spectrum
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3. Describe how gases and particles in the
atmosphere interact with light rays.

• Nitrogen, oxygen, and ozone in the upper
  atmosphere absorbs most short wavelength
  radiation
• CO2 and water vapor absorb infrared radiation
  in the lower atmosphere.
• About 50 of visible light reaches Earths
  surface. Clouds, particulates and gases scatter
  and reflect much of the light.

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Formation of OZONE
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4. Describe how visible light and infrared
energy warm Earth.

• Infrared and visible light that reach Earths
  surface are absorbed. Heated surfaces radiate
  heat back into the air where greenhouse gases
  absorb some of the heat.

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Infrared radiation
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Infrared Images
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5. Explain how variations in intensity of
sunlight can cause temperature differences on
Earths surface.

• Concentrated sunlight at the equator makes the
  surface hotter and at higher latitudes where
  sunlight is spread over a larger area the surface
  is cooler.

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6. You decide not to be outside during the
hottest hours of a summer day. When will the
hottest hours probably be? How do you know?

• The hottest hours will probably be in the late
  afternoon when Earths surface has had time to
  absorb and reradiate energy. This is also when
  convection reaches its peak.

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You should have seen the one that got away

• The End???