Photochemical Smog: Smedes 7.2An APES Review

What breaks down nitrogen dioxide into nitric oxide and free oxygen?

• Water vapor

• Sunlight

• Carbon dioxide

• Ozone

Which of the following is NOT a precursor to photochemical smog?

• Ozone

• Volatile Organic Compounds (VOCs)

• Nitrogen dioxide

• Carbon monoxide

Tags

NGSS.HS-PS1-5

What is the role of sunlight in the formation of photochemical smog?

• It cools down the temperature, slowing the reaction.

• It directly produces ozone.

• It provides energy to break down nitrogen dioxide.

• It increases the concentration of VOCs.

Tags

NGSS.HS-PS1-5

Which of the following is a characteristic of volatile organic compounds?

• They decrease the formation of ozone.

• They are inorganic compounds.

• They are not easily vaporized.

• They evaporate easily at room temperature.

What environmental condition is NOT required for smog to form?

• High humidity

• Warmth

• Sunlight

• Presence of VOCs

What happens to ozone at night under normal conditions?

• It increases due to lower temperatures.

• It breaks down into VOCs.

• It recombines with nitric oxide, reversing the reaction.

• It remains stable throughout the night.

How do volatile organic compounds contribute to the formation of photochemical smog?

• By breaking down into nitrogen dioxide.

• By evaporating and reducing ozone levels.

• By binding with nitric oxide to form photochemical oxidants.

• By directly producing ozone.

Which factor does NOT increase the formation of photochemical smog?

• More sunlight

• Warmer temperatures

• Higher emissions of carbon monoxide

• Increased traffic

Why are urban areas more likely to experience smog than rural areas?

• Rural areas have more plants that absorb smog.

• Because of the urban heat island effect.

• Urban areas have less sunlight.

• Due to lower temperatures in urban areas.

Tags

NGSS.MS-ESS3-4

What is a health effect of smog on humans?

• Increases oxygen intake

• Has no effect on human health

• Makes asthma and other respiratory diseases worse

• Improves respiratory function