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AP Environmental Science MCQs

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AP Environmental Science practice questions by unit

Fiveable has 31,331 AP Environmental Science multiple-choice practice questions across 9 units, plus 751 stimulus-based question sets built around a source. Practice one unit or topic at a time.

  • Unit 1 – The Living World: Ecosystems: 1,824 multiple-choice questions, 84 stimulus sets
  • Unit 2 – The Living World: Biodiversity: 2,694 multiple-choice questions, 51 stimulus sets
  • Unit 3 – Populations: 2,877 multiple-choice questions, 69 stimulus sets
  • Unit 4 – Earth Systems & Resources: 2,573 multiple-choice questions, 65 stimulus sets
  • Unit 5 – Land & Water Use: 5,961 multiple-choice questions, 133 stimulus sets
  • Unit 6 – Energy Resources & Consumption: 5,067 multiple-choice questions, 98 stimulus sets
  • Unit 7 – Atmospheric Pollution: 2,675 multiple-choice questions, 58 stimulus sets
  • Unit 8 – Aquatic & Terrestrial Pollution: 4,462 multiple-choice questions, 117 stimulus sets
  • Unit 9 – Global Change: 3,198 multiple-choice questions, 76 stimulus sets

Sample AP Environmental Science practice question

Researchers measured nitrate at one well 500 meters downstream from farmland. If they instead sampled wells at 100, 300, 500, and 1000 meters monthly for a year, how would this change their understanding of nitrogen pollution impacts?

Reveal spatial and seasonal nitrate patterns showing reduced purification nearer the source.

Correct answer

Claim concentrations would decrease because sampling more locations spreads pollution

Argue results are less reliable due to unrelated hydrogeological differences among wells.

Assert annual averages would increase simply because more wells were sampled.

Explanation

Adding spatial and temporal replication reveals contamination gradients and seasonal flux. Sampling multiple distances and months lets researchers link agricultural runoff to reduced groundwater purification.

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