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The Changing Atmosphere<br />1.3  Gases in the atmosphere absorb radiation.<br />
Gases can absorb and give off radiation.<br />Just as there are sounds we cannot hear, there are forms of light (radiation...
Gases can absorb and give off radiation.<br />Sounds can also be too low to hear.<br />Infrared radiation<br />Has less en...
The ozone layer protects life from harmful radiation.<br />Ozone (O3)<br />Made of 3 atoms of oxygen.<br />We breathe O2.<...
The greenhouse effect keeps Earth warm.<br />Gases in the atmosphere absorb and emit infrared radiation, which keeps energ...
The greenhouse effect keeps Earth warm.<br />Greenhouse gases absorb and emit infrared radiation.<br />Carbon dioxide<br /...
The greenhouse effect keeps Earth warm.<br />If there were no greenhouse effect, the average temperature on Earth would be...
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1.3 gases in the atmosphere absorb radiation

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Transcript of "1.3 gases in the atmosphere absorb radiation"

  1. 1. The Changing Atmosphere<br />1.3 Gases in the atmosphere absorb radiation.<br />
  2. 2. Gases can absorb and give off radiation.<br />Just as there are sounds we cannot hear, there are forms of light (radiation) we cannot see.<br />Sounds can be too high to hear. <br />Ultraviolet radiation<br />Has more energy than the light we see.<br />Can cause sunburn, skin cancer, and eye damage.<br />Can harm crops and materials such as plastic and paint.<br />
  3. 3. Gases can absorb and give off radiation.<br />Sounds can also be too low to hear.<br />Infrared radiation<br />Has less energy than visible light.<br />Usually warms the materials that absorb it.<br />Gases in the atmosphere absorb both ultraviolet and infrared radiation.<br />
  4. 4. The ozone layer protects life from harmful radiation.<br />Ozone (O3)<br />Made of 3 atoms of oxygen.<br />We breathe O2.<br />Ozone in the atmosphere is called the ozone layer.<br />The ozone layer absorbs harmful ultraviolet radiation from the sun but lets other types of radiation through.<br />
  5. 5. The greenhouse effect keeps Earth warm.<br />Gases in the atmosphere absorb and emit infrared radiation, which keeps energy in Earth’s system for a while. <br />This is called the greenhouse effect.<br />
  6. 6.
  7. 7. The greenhouse effect keeps Earth warm.<br />Greenhouse gases absorb and emit infrared radiation.<br />Carbon dioxide<br />Methane<br />Water vapor<br />Nitrous oxide<br />CFCs <br />
  8. 8. The greenhouse effect keeps Earth warm.<br />If there were no greenhouse effect, the average temperature on Earth would be 0 degrees F. <br />The combined effect of the greenhouse gases keeps Earth’s average temperature around 59 degrees F. <br />
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