Question

What is normal lapse rate?

• A. For every 165 metre rise in altitude, the temperature decreases by 2 degree Celsius.
• B. For every 162 metre rise in altitude, the temperature decreases by 1 degree Celsius.
• C. For every 160 metre rise in altitude, the temperature decreases by 1 degree Celsius.
• D. For every 165 metre rise in altitude, the temperature decreases by 1 degree Celsius.

Answer 1

The correct option is D For every 165 metre rise in altitude, the temperature decreases by 1 degree Celsius.

Lapse rate is the rate at which temperature in the atmosphere falls with altitude. For every 165 metre rise in altitude, the temperature decreases by 1 degree Celsius. This is called the normal lapse rate.