photochemical smog

Front

What is photochemical smog?

Back

A type of air pollution that occurs when sunlight reacts with pollutants such as nitrogen oxides and volatile organic compounds, leading to the formation of secondary pollutants like ozone.

Front

What are the primary components that lead to the formation of photochemical smog?

Back

Nitrogen, oxygen, and sunlight.

Front

What is a catalytic converter?

Back

An air pollution prevention mechanism in vehicles that converts harmful gases from the engine into less harmful emissions.

Front

What is a secondary pollutant?

Back

A pollutant that is not directly emitted but forms when primary pollutants react in the atmosphere.

Front

Where is the Earth's ozone layer located?

Back

In the stratosphere.

Front

Which of the following is NOT a criteria air pollutant?

Back

Carbon dioxide.

Front

What role does sunlight play in the formation of photochemical smog?

Back

Sunlight provides the energy needed for the chemical reactions between pollutants that lead to the formation of smog.

Front

What are nitrogen oxides (NOx)?

Back

Gases produced from burning fossil fuels, which contribute to the formation of photochemical smog.

Front

What are volatile organic compounds (VOCs)?

Back

Organic chemicals that can evaporate into the air and contribute to air pollution, often found in paints, solvents, and fuels.

Front

How does temperature inversions affect air pollution?

Back

Temperature inversions trap pollutants close to the ground, preventing them from dispersing and leading to increased smog formation.