Air Quality and Pollution

According to the Air Quality Index (AQI) categories, what AQI range is considered "Very unhealthy"?

• 0-50

• 100-150

• 200-300

• 300-500

What is the primary cause of most forms of air pollution?

• Photosynthesis

• Combustion

• Evaporation

• Condensation

In the process of combustion, what does oxygen react with to release energy?

• Water

• Carbon dioxide

• Fuel

• Nitrogen

Which of the following is NOT a product of combustion?

• Particulates

• Sulfur dioxide

• Oxygen

• Nitrogen oxides

Which of the following is a characteristic of pure fuels?

• Release many forms of air pollutants.

• Contain additional non-combustible elements.

• Only contain the fuel.

• Include coal, oil, and wood.

What are the products released by pure fuels?

• Carbon dioxide and water vapor.

• Many forms of air pollutants.

• Non-combustible elements.

• Sulfur dioxide and nitrogen oxides.

Which of the following is NOT an example of a pure fuel?

• Methane

• Gasoline

• Ethanol

• Coal

What is a characteristic of "dirty" fuels?

• Only contain the fuel.

• Release carbon dioxide and water vapor.

• Release many forms of air pollutants.

• Include methane, gasoline, and ethanol.

Which of the following is an example of a "dirty" fuel?

• Methane

• Gasoline

• Ethanol

• Oil

What are primary pollutants?

• Pollutants that are formed when primary pollutants react with gases in the atmosphere.

• Pollutants that are directly released into the air from the source.

• Pollutants that are formed from secondary pollutants.

• Pollutants that are only found in water bodies.