AP®︎ Environmental Science: Topic 8.11 Practice Test
Prepare for your quiz, test, or the AP exam with focused practice questions on Topic 8.11 of AP Environmental Science – Sewage Treatment.
Questions List
Topic 8.11
Question 1 Easy
This question tests the following: STB-3.N
What is the primary goal of sewage treatment?
What You’re Being Tested On:
Explore the learning objectives taken directly from the College Board’s AP® Environmental Science Curriculum. Ensure you’re prepared for the exact topics covered on the AP® exam, in-class tests, and quizzes, and gain confidence in your mastery of the material.
Topic 8.11: Sewage Treatment
Learning Objective: STB-3.N
Describe best practices in sewage treatment.
Essential Knowledge: STB-3.N.1
Primary treatment of sewage is the physical removal of large objects, often through the use of screens and grates, followed by the settling of solid waste in the bottom of a tank.
Essential Knowledge: STB-3.N.2
Secondary treatment is a biological process in which bacteria break down organic matter into carbon dioxide and inorganic sludge, which settles in the bottom of a tank. The tank is aerated to increase the rate at which the bacteria break down the organic matter.
Essential Knowledge: STB-3.N.3
Tertiary treatment is the use of ecological or chemical processes to remove any pollutants left in the water after primary and secondary treatment.
Essential Knowledge: STB-3.N.4
Prior to discharge, the treated water is exposed to one or more disinfectants (usually, chlorine, ozone, or UV light) to kill bacteria.
