Why do ears pop during airplane takeoff and landing?

Pressure imbalance between middle ear and cabin air.

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Question 1 of 3 Easy

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1 Easy

What job did Albert Einstein have when he created E=mc²?

Answer: Patent clerk
2 Medium

What did Michelson-Morley experiment disprove in physics?

Answer: Luminiferous ether
3 Hard

Which subatomic particle has the smallest known non-zero mass?

Answer: neutrino
4 Easy

Why do ears pop during airplane takeoff and landing?

Answer: Pressure imbalance between middle ear and cabin air.
5 Medium

Which effect causes light to shift frequency due to relative motion?

Answer: Doppler effect
6 Hard

What is the minimum energy required to remove an electron from a metal?

Answer: work function