Thermal Inversion (College Board AP® Environmental Science): Exam Questions

5 mins5 questions
11 mark

Which of the following atmospheric phenomena is represented by the diagram?

Diagram illustrating temperature inversion: cool air at ground level, a warm inversion layer above a city, and more cool air above that.
  • Rainshadow effect

  • Surface albedo

  • Photochemical smog

  • Thermal inversion

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21 mark

If the diagram below were modified to represent a thermal inversion, which of the following would be the correct order of the layers, starting with the surface.

Diagram illustrating temperature layers above a city, showing cooler air at the top, cool air in the middle, and warm air near the surface.
  • Warm air, colder air, cold air

  • Colder air, cool air, warmer air

  • Cool air, warm air, cooler air

  • Cooler air, warm air, cool air

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31 mark

Based on the diagram, which of the following best explains why pollutants tend to be concentrated near the Earth's surface?

Diagram of temperature inversion over a city, showing warm inversion layer trapping cooler air below, with surrounding trees and hills.
  • Warm air rises quickly, carrying pollutants away from the surface.

  • A layer of warm air above cooler air prevents pollutants from dispersing upward.

  • Strong winds mix air layers, keeping pollution levels low.

  • Cold air sinks and disperses pollutants higher into the atmosphere.

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41 mark

Which of the following explains a harmful consequence of a thermal inversion?

  • It increases air circulation, reducing pollution levels.

  • It traps pollutants near the surface, leading to poor air quality and health issues.

  • It decreases surface albedo, causing a positive feedback loop.

  • It enhances cloud formation, resulting in increased rainfall.

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51 mark

Which of the following best explains how thermal inversions occur?

  • Cold air rises above warm air, allowing pollutants to disperse easily.

  • A layer of warm air traps cooler air and pollutants close to the ground.

  • Strong winds mix air layers, preventing pollution buildup.

  • High-pressure systems push warm air downward, creating stable weather conditions.

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