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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Vocabulary

Photochemical smog

Acid precipitation

Particulate matter

Global warming

Greenhouse effect

Air Quality Index

Importance of Clean Air

Your body, and the bodies of other animals, uses oxygen in air to produce some of the energy it needs. Many organisms can survive for only a few minutes without air. But the air you breathe must be clean or it can harm your body

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

Types or Air Pollution

Particulate Matter The mix of both solid and liquid particles in

the air is called particulate matter CFCs Carbon Monoxide

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

The Carbon Cycle

The Greenhouse Effect

Health Disorders

Measuring Air Quality The Air Quality Index (AQI) is a scale

that ranks level of ozone and other air pollutants

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.

Homework

Workbook: Page 228 – 231Textbook: Page 253 #1, 2, 3,

4, 5, 7 & 9Write down questions and

answers. Turn them into me