Ecology Name: ______________________ Resources - Air Chapter 12.1 What Causes Air Pollution? Objectives:

• Name five primary air pollutants, and give sources for each • Name the two major sources of air pollution in urban areas • Describe the way in which smog forms • Explain the way in which a thermal inversion traps air pollution

Vocabulary: Before reading, define the following terms

1. Air pollution

2. Primary pollutant

3. Secondary pollutant

4. Smog

5. Temperature inversion Getting Started: Before reading, respond to the following question. List some possible effects of smoking (cigarettes). Describe how you would feel if a scientific study found that the air you breathe was equal to smoking a pack of cigarettes (or more) every day.

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Get into it! Read Chapter 12 Section 1, then answer the following questions.

1. Use the chart below to describe the five Primary Air Pollutants, at least two of their sources, and the effects they have on the environment.

2. List the two major sources of air pollution in urban areas?

3. What are the main causes of smog?

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4. Using Figure 4 in Chapter 12 Section1, draw a simple picture that shows and explains how smog forms.

5. Explain how temperature inversion traps pollutants near the Earth’s surface.

6. You have read about the California Zero-Emission Vehicle Program. a. Do you think that automobile makers should be required by

their state to make cars with zero-emissions?

b. Do you think that those same automobile makers should continue to make zero-emission vehicles even if it causes them to loose money? Explain your answer.