“DO NOW” # 7

• I. Environmental Science• A. Air Pollution• 1. List 3 ways air becomes dirty.• 2. What are some symptoms of

air pollution?• 3. Who else besides humans are

affected by air pollution?• 4. What’s one thing the United

States has done to improve air quality?

• 5. Explain what indoor pollution is and how to improve it.

Environmental Projects Due 4/25• What is smog?

A dragon invented by J.R.R. Tolkien.A mix of smoke and fog made mostly of ozone.A visual form of acid rain.

• I live far away from factories and traffic so I am safe from air pollution.TrueFalse

• You can aways see air pollution.TrueFalse

• What is the purpose of a catalytic converter?To turn gasoline into cleaner burning fuel.To add power to the engine and make the car last longer.To turn hydrocarbons and carbon monoxide into water and carbon dioxide.

• How much did the level of lead in the air drop from 1975 to 1984?30%50%70%