APES Unit 7: Atmospheric Pollution

Front

What are VOCs and give examples?

Back

VOCs (Volatile Organic Compounds) are hydrocarbons that vaporize easily. Examples include gasoline, solvents, paints, fingernail polish, and thinners.

Front

What is a thermal inversion and its effect on pollution?

Back

A thermal inversion is a weather phenomenon that traps high concentrations of pollution at ground level, preventing it from dispersing.

Front

What role does stratospheric ozone play in the atmosphere?

Back

Stratospheric ozone prevents UV radiation from reaching the troposphere, protecting living organisms from harmful effects.

Front

What is the concentration of nitrogen in the Earth's atmosphere?

Back

The concentration of nitrogen in the atmosphere is 78%.

Front

What is the primary source of atmospheric mercury?

Back

The majority of atmospheric mercury is produced by coal-burning power plants.

Front

What are the main components of air pollution?

Back

The main components of air pollution include particulate matter, nitrogen oxides, sulfur dioxide, carbon monoxide, and volatile organic compounds.

Front

How do thermal inversions affect air quality?

Back

Thermal inversions can lead to poor air quality by trapping pollutants close to the ground, which can cause health problems and environmental issues.

Front

What is the significance of the ozone layer?

Back

The ozone layer is significant because it absorbs the majority of the sun's harmful ultraviolet radiation, protecting life on Earth.

Front

What are the health effects of exposure to high levels of VOCs?

Back

Exposure to high levels of VOCs can cause respiratory issues, headaches, dizziness, and long-term health effects such as liver and kidney damage.

Front

What is the difference between primary and secondary pollutants?

Back

Primary pollutants are directly emitted from sources (e.g., CO2, NOx), while secondary pollutants are formed through chemical reactions in the atmosphere (e.g., ozone, smog).