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AerodynamicsQuestion 415 of 934

What does Bernoulli's Principle say about a moving fluid?

  1. When the velocity increases, the pressure also increases
  2. When the velocity decreases, the pressure decreases
  3. When the velocity increases, the pressure decreases
  4. The pressure stays the same at all velocities
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Correct answer: When the velocity increases, the pressure decreases

As the speed of a moving fluid increases, the pressure within the fluid decreases.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 4: Principles of Flight — Bernoulli's Principle of Differential Pressure, page 93

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Questions last reviewed: 18 October 2026