6.3 Review - Photochemical Smog

The World Health Organization (WHO) estimated that in 2012 outdoor air pollution resulted in 3.7 million premature deaths.

(Based on data from WHO)

Using information in the table above, calculate the number of premature deaths from respiratory infections in 2012.

Mathematical Equivalence

ON

The World Health Organization (WHO) estimated that in 2012 outdoor air pollution resulted in 3.7 million premature deaths.

Calculate the number of premature deaths per day in 2012 due to outdoor air pollution. 2012 was a leap year so it had 366 days)

Give your answer to the nearest whole number.

Mathematical Equivalence

ON

What can be done by a national government in order to control the release of pollutants contributing to photochemical smog?

• Introduce regulation on fuel quality.

• Introduce taxation based on the amount of pollutants transmitted.

• Introduce regulation on the amount of primary pollutants emitted by industries.

• All of the answer alternatives.

At which point of the day does photochemical smog reach its peak?

• In the afternoon

• In the evening

• In the morning

• At night

Towns and cities placed in valleys where mountains or hills prevent the wind from driving the photochemical smog away are called:

• Thermal conversion traps

• Thermal inversion traps

• Thermal retroversion traps

• Thermal retroversion traps

Which of the following cities is the most likely to be affected by the highest levels of photochemical smog?

• Los Angeles, USA

• Warsaw, Poland

• Bucharest, Romania

• Berlin, Germany

Tropospheric ozone is an example of:

• A primary pollutant

• A secondary pollutant

• A tertiary pollutant

• Tropospheric ozone is not a pollutant

What is the difference between primary and secondary pollutants?

• Primary pollutants have a more complex chemical structure than secondary pollutants

• Primary pollutants are formed from a mixture of different secondary pollutants.

• Primary pollutants are emitted directly from a source, while secondary pollutants are created as a result of a set of reactions of primary pollutants.

• There is no difference between primary and secondary pollutants.

What is the main pollutant formed in photochemical smog?

• tropospheric ozone

• stratospheric ozone

• pollution

• methane

Which of the following is a major contributor to air pollution in urban areas?

• Industrial emissions

• Agricultural runoff

• Deforestation

• Marine pollution