Why Do Your Ears Sometimes Pop When You Go Up

question 60

Multiple Choice

Why do your ears sometimes pop when you go up in an airplane?

• A)There are fewer air molecules pushing against the outer surface of your ear drum.
• B)There are more air molecules pushing against the outer surface of your ear drum.
• C)The atmospheric pressure is changing.
• D)You probably haven't removed your headphones.

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Definitions:

Population Variance

The measure of how much the numbers in a population differ from the mean value of the population.

T-test

A statistical test used to determine if there is a significant difference between the means of two groups.

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A vehicle maintenance procedure that involves moving tires from one position on a vehicle to another, to ensure even tire wear.

Required Condition

A prerequisite or necessary condition that must be met for a certain procedure, test, or action to be appropriate or valid.