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CHAPTER 7: ENVIRONMENTAL IMPACTS

CHAPTER 7: ENVIRONMENTAL IMPACTS. Lesson 4: Impacts on the atmosphere. ??. Essential Questions. What are some types of air pollution ? How are global warming and the carbon cycle related ? How does air pollution affect human health ? What actions help prevent air pollution ?.

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CHAPTER 7: ENVIRONMENTAL IMPACTS

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  1. CHAPTER 7: ENVIRONMENTAL IMPACTS

  2. Lesson4: Impactsontheatmosphere

  3. ?? EssentialQuestions • What are sometypes of air pollution? • How are global warming and thecarboncyclerelated? • Howdoes air pollutionaffect human health? • Whatactionshelpprevent air pollution?

  4. Vocabulary • Photochemical smog • Acidprecipitation • Particulatematter • Global warming • Greenhouseeffect • Air QualityIndex

  5. Importance of Clean Air • Yourbody, and thebodies of otheranimals, uses oxygen in air to produce some of theenergyitneeds. Manyorganisms can surviveforonly a few minutes without air. Butthe air youbreathemust be cleanorit can harmyourbody

  6. Types or Air Pollution • Smog • Photochemical smog is caused when nitrogen and carbon compounds in the air react in sunlight • Acid precipitation is rain or snow that has a lower pH than that of normal rainwater

  7. Types or Air Pollution • Particulate Matter • The mix of both solid and liquid particles in the air is called particulate matter • CFCs • Carbon Monoxide

  8. Global Warming and the Carbon Cycle • Global Warming is an increase in Earth’s average surface temperature • Effects of Global Warming • The Greenhouse Effect • The greenhouse effect is the natural process that occur when certain gases in the atmosphere absorbs and reradiate thermal energy from the Sun

  9. The Carbon Cycle

  10. The Greenhouse Effect

  11. Health Disorders • Measuring Air Quality • The Air Quality Index (AQI) is a scale that ranks level of ozone and other air pollutants

  12. Positive Actions • National Initiatives • In USA, the Clean Air Act sets limits • Cleaner Energy • Using renewable energy resources • How can you help? • Reducing energy: Turn the thermostat down, walk to the store or use public transportation, etc.

  13. Homework Workbook: Page 228 – 231 Textbook: Page 253 #1, 2, 3, 4, 5, 7 & 9 Writedownquestions and answers. Turntheminto me

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