IB Y13 Unit 6.3 Photochemical Smog

What effect do temperature inversions have?

• traps heat and raises the temperature beneath it

• traps cold air and lowers the temperature beneath it

• traps emissions and can accumulate beneath it

• traps the ozone layer

What is the source of nitrogen oxides?

• Animal and plant processes

• Volcanic eruptions and fires

• Solvents, glues and paint

• Incomplete combustion of gas or diesel fuels in vehicles.

Which of the following is not an example of a volatile organic compound? (VOC)

• carbon monoxide

• paint thinner

• gasoline

• air freshener

SECONDARY pollutants can result from the reaction of VOC's and nitrogen oxides with ____

• warm temperatures

• cold temperatures

• CO2

• sunlight

Both geography and weather contribute to the formation of smog.

• True

• False

How do temperature Inversions affect air currents?

• A layer of cold, polluted air mixes with the warm air from the surface and creates a smog-like layer

• A layer of slightly warmer air prevents the warm, polluted air from rising, causing a build up of pollution near the surface

• A layer of smoke causes temperatures to lower near the surface of the earth, causing more pollution in the air.

Which compounds are mainly responsible for the formation of photochemical smog?

• Carbon monoxide and sulfur dioxide

• Nitrogen oxides and volatile organic compounds

• Methane and carbon dioxide

• Chlorofluorocarbons and water vapor

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

• It cools down the pollutants, reducing smog formation

• It acts as a catalyst in the chemical reactions that produce smog

• It has no significant role in smog formation

• It dissolves the pollutants in the atmosphere

What are the two types of ozone mentioned in the document?

• Atmospheric and Ground-level Ozone

• Stratospheric and Mesospheric Ozone

• Stratospheric and Tropospheric Ozone

• Kitchen and bathroom Ozone

What health effects can be caused by PANS (Peroxyacetyl nitrates)?

• Irritates eyes, nose, and throat

• Improves respiratory function

• Reduces risk of heart disease

• burnt scrambled eggs