Ozone Quiz

Where is ozone considered good?

• In the lower atmosphere

• In the upper atmosphere

• Near industrial areas

• Inside buildings

Where is ozone considered bad?

• In the upper atmosphere

• Inside buildings

• Near industrial areas

• In the lower atmosphere

What is ozone?

• A type of smog

• A gas that occurs both in the Earth's upper atmosphere and at ground level

• A man-made chemical

• A layer in the Earth's atmosphere

Where does the "good" ozone layer exist?

• Throughout the entire atmosphere

• At ground level

• In the stratosphere

• In the troposphere

What is the main consequence of the depletion of the "good" ozone layer?

• Increase in smog

• Decrease in UV radiation

• Increase in skin cancer and cataracts

• Improvement in air quality

Which substances were formerly used in coolants, foaming agents, and fire extinguishers that are now known to deplete the ozone layer?

• Hydrocarbons

• Carbon dioxide

• Chlorofluorocarbons (CFCs)

• Nitrous oxide

By approximately what year should the ozone layer return to normal levels according to the actions taken under the Montreal Protocol?

• 2030

• 2050

• 2100

• 2200

What is "bad" ozone?

• Ozone that is emitted directly into the air

• Ozone created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight

• Ozone found in the upper atmosphere that protects us from the sun's harmful UV rays

• Ozone that is used in industrial applications

Which of the following is NOT a major source of VOCs?

• Motor vehicle exhaust

• Gasoline vapors

• Electric utilities

• Natural forest emissions

How can "bad" ozone affect human health?

• It can improve respiratory health

• It can cause chest pain, coughing, throat irritation, and worsen bronchitis and emphysema

• It can enhance the immune system

• It has no effect on human health