Practice Quiz

FAA Private Pilot Test Prep

Category - FAA Private Pilot

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Which statement relates to Bernoulli's principle?
  1. Mass is always conserved in an equation
  2. Every action has an equal and opposite reaction
  3. Air moving over a wing causes a high pressure to develop under the wing drawing the plane upward into the air
  4. The airfoil (wing) splits an air mass causing the air to move faster over the top of the wing and causing a low pressure above the wing and pulling the wing skyward
Explanation
Correct answer: D. The airfoil splits the air mass into two. The air above the wing goes faster than the air below the wing. This movement of the air causes a pressure differential and the lower pressure above the wing “draws” the wing upward. Thus the movement through the air causes the wing to generate lift.
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