AP®︎ Environmental Science: Topic 9.3 Practice Test
Prepare for your quiz, test, or the AP exam with focused practice questions on Topic 9.3 of AP Environmental Science – The Greenhouse Effect.
Questions List
Topic 9.3
Question 1 Easy
This question tests the following: STB-4.C
Which of the following is a principal greenhouse gas?
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 9.3: The Greenhouse Effect
Learning Objective: STB-4.C
Identify the greenhouse gases.
Essential Knowledge: STB-4.C.1
The principal greenhouse gases are carbon dioxide, methane, water vapor, nitrous oxide, and chlorofluorocarbons (CFCs).
Essential Knowledge: STB-4.C.2
While water vapor is a greenhouse gas, it doesn't contribute significantly to global climate change because it has a short residence time in the atmosphere.
Essential Knowledge: STB-4.C.3
The greenhouse effect results in the surface temperature necessary for life on Earth to exist.
Learning Objective: STB-4.D
Identify the sources and potency of the greenhouse gases.
Essential Knowledge: STB-4.D.1
Carbon dioxide, which has a global warming potential (GWP) of 1, is used as a reference point for the comparison of different greenhouse gases and their impacts on global climate change. Chlorofluorocarbons (CFCs) have the highest GWP, followed by nitrous oxide, then methane.