Types of Air Pollution (CK-12) Exam 2025/2026 Questions With Completed Solutions.

Types of Air Pollution (CK-12)

_____ is a secondary pollutant that is also a greenhouse gas. - ANS ozone
\__________ pollutants are produced in the air as a part of photochemical smog resulting
from a chemical reaction in the presence of sunlight. - ANS secondary
\Photochemical smog and ozone are types of: - ANS secondary pollutants
\Secondary pollutants form as a result of _________ ___________. - ANS chemical
reactions
\TRUEORFALSE: An air pollutant can be a solid, liquid, or gas. - ANS true
\TRUEORFALSE: Burning fossil fuels releases many pollutants into the air. These
pollutants include carbon monoxide, carbon dioxide, nitrogen dioxide, and sulfur
dioxide. - ANS true
\TRUEORFALSE: Ground-level ozone is an example of a secondary pollutant. - ANS true
\TRUEORFALSE: Secondary pollutants are less dangerous than primary pollutants. - ANS
false
\TRUEORFALSE: Sulfur dioxide is responsible for the brown color of photochemical
smog over a city. - ANS false
\Unlike secondary pollutants, ________ pollutants are released directly into the air by
natural processes or by human activities. - ANS primary
\Which is not a primary pollutant? - ANS ozone
\yesorno: Is the ozone harmful in the troposphere? - ANS yes
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