AP Environmental Science Flashcards: Sources of Pollution
Written by AP Content Team, Verified for 2026 AP Exams, Last updated: May 2026
Review key ideas with interactive flashcards. This set includes 10 cards to help you master important concepts.
What is a point source of pollution?
A point source is a single, identifiable source of a pollutant, such as a smokestack or a waste discharge pipe.
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What is a point source of pollution?
A point source is a single, identifiable source of a pollutant, such as a smokestack or a waste discharge pipe.
Which pollution source is easier to manage and regulate, and why?
Point sources are generally easier to manage and regulate because they can be traced back to a single, identifiable origin.
What is a nonpoint source of pollution?
Nonpoint sources of pollution are diffused and can be difficult to identify, such as pesticide spraying or urban runoff.
Is urban runoff from a city's streets an example of a point or nonpoint source?
It is a nonpoint source because the pollution is diffused over a large area and does not originate from a single, identifiable spot.
Runoff from pesticide spraying over a large agricultural field is an example of what kind of pollution source?
This is a nonpoint source because the pollution is diffused over the entire field rather than coming from a single pipe or drain.
What is the primary difference between point and nonpoint sources of pollution?
The primary difference is identifiability; point sources come from a single, identifiable location, while nonpoint sources are diffused and difficult to trace.
Is a waste discharge pipe from a factory an example of a point or nonpoint source?
It is a point source because it is a single, identifiable source of the pollutant.
Which type of pollution source is characterized as being 'diffused'?
Nonpoint sources of pollution are characterized as being diffused, meaning they are spread out and not from a single location.
A smokestack releasing emissions is what type of pollution source?
A smokestack is a point source because it is a single, identifiable origin of the pollution.
Why can it be difficult to identify the origin of nonpoint source pollution?
It is difficult because the pollutants are diffused, meaning they come from a broad area rather than a single, specific location.