Multiple choice

The lapse rate at 20 km to 30 km from Earth's surface is

  1. 1 degree/1000 feet

  2. 2 degrees/1000 feet

  3. 3 degrees/1000 feet

  4. none of these
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A Correct answer
Explanation

In the 20-30 km altitude range (stratosphere), the standard atmosphere has a positive temperature lapse rate of approximately 1°C per 1000 feet. This is above the tropopause and lower stratosphere where temperatures increase with altitude due to ozone absorption of UV radiation.

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