The rate of decrease of temperature with height is about __________ $^{0} c$ per km above sea level.

6.5

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7.5

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8.5

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9.5

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Solution

The correct option is A 6.5
Temperatures decrease with altitude in the troposphere at a rate of about 6.5 degrees Celsius (11.7 degrees Fahrenheit) per kilometer, depending on the weather. This occurs as a result of decreasing air pressure with altitude. As pressure decreases, air expands, and it cools as it does so.

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The rate of decrease of temperature with height is about __________0c per km above sea level.

The rate of decrease of temperature with height is about __________ $^{0} c$ per km above sea level.