Photochemical Smog

Photochemical smog is a condition in which light-activated tropospheric ozone accumulates with other pollutants such as PANs and PM.

• True

• False

This primary pollutant creates a reddish brown gas creating photochemical smog and tropospheric ozone.

• sulfuric acid

• VOC

• nitrogen dioxide

• particulate matter

Smog or ground ozone forms in the troposphere. Which pollutants are most responsible for photochemical smog or ground ozone?

• sulfur and particulate matter

• volatile organic compounds (VOCs) and nitrogen oxides

• carbon monoxide and carbon dioxide

• none of these answers are correct

Tags

NGSS.HS-PS1-5

What are 4 characteristics of urban areas with high levels of photochemical smog?

• Calm winds, dry weather, sunny, many industries and vehicles

• High winds, wet weather, cloudy, many industries and vehicles

• Located in a basin or surrounded by mountains

• Located in a basin or surrounded by mountains, calm winds, dry weather, sunny, many industries and vehicles

• All of the above

Tags

NGSS.MS-ESS3-4

The principal component of smog
Source: Chemical reaction of  VOCs and NOx
Health effects: breathing problems, reduced lung capacity, asthma, eye irritation, reduced resistance to disease
Environmental effects: can damage plants

• Pb

• CO

• SO₂

• O₃

Tags

NGSS.MS-PS1-2

The amount of primary pollutants in the air increases during ___________.

• sunlight

• high traffic

• night time

• low traffic

Which of the following are examples of VOCs ?

• paint and paint thinners

• gasoline

• water vapor

• smog

Which of the following is a major contributor to the formation of photochemical smog?

• Carbon monoxide

• Nitrogen oxides

• Sulfur dioxide

• Methane

Photochemical smog is most likely to occur in which type of weather conditions?

• Rainy and windy

• Sunny and calm

• Cloudy and humid

• Snowy and cold

Tags

NGSS.MS-ESS2-5

What is the primary chemical reaction involved in the formation of photochemical smog?

• Oxidation of sulfur dioxide

• Hydrolysis of carbon monoxide

• Photolysis of nitrogen dioxide

• Reduction of methane