Question

Which of the following statements explain 'Normal Lapse Rate'?

• A. The decrease in temperature of about 1 degree Celsius for every 100 metre rise in altitude.
• B. The decrease in temperature of about 1 degree Celsius for every 150 metre rise in altitude.
• C. The decrease in temperature of about 1 degree Celsius for every 165 metre rise in altitude.
• D. The decrease in temperature of about 1 degree Celsius for every fifty degree increase in latitude.

Answer 1

The correct option is C The decrease in temperature of about 1 degree Celsius for every 165 metre rise in altitude.

In the troposphere, temperature is not vertically uniform as we move up, the temperature decreases. The temperature decreases by 1 degree Celsius for every 165 metre rise in altitude. This is called the normal lapse rate.