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SESK: Stuff Everyone Should Know · sesk.info/health-ears-pop-altitude

Why do your ears pop when a plane climbs or descends?

Pressure changes make the eustachian tube open to equalize.

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  1. Pressure changes ✔
  2. Wax melts
  3. Sound waves enter

Why: When outside air pressure changes, the eustachian tube opens to equalize pressure on both sides of the eardrum. The pop is the tube opening.

Huh, didn't know that: Chewing gum the whole time you are changing altitudes can help keep the ears clear.

The dad joke
What kind of ears does an engine have? Engineers.
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References

Answer: Pressure changes. When outside air pressure changes, the eustachian tube opens to equalize pressure on both sides of the eardrum. The pop is the tube opening.

  1. MedlinePlus Ear Barotrauma medlineplus.gov/ency/article/002077.htm
    Swallowing or yawning opens the eustachian tube and allows air to flow into or out of the middle ear.
    Checked 2026-10-11.

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