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.

The lapse rate is the rate at which an atmospheric variable, normally temperature in Earth's 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.