Question

8) Usually, for every 1000 meters increase in elevation from the sea level, the temperature falls by °C ​

Answer 1

Answer:

As you climb a mountain, you can expect the air temperature to decrease by 6.5 degrees C for every 1000 meters you gain. This is called the standard (average) lapse rate.

Answer 2

As the altitude increases the temperature decreases because of the low air pressure. The air temperature decreases by 6.5 degrees C for every 1000 meters.

Explanation:

• As you increase in elevation, there is less air above and thus the pressure decreases.

• As the pressure decreases, air molecules spread out further (i.e. air expands) and the temperature decreases.

• As atmospheric pressure decreases with height, the air temperature decreases by 6.5 degrees C for every 1000 meters.

• This is called the standard (average) lapse rate.

• Temperature varies with altitude and in the troposphere, temperature decreases as altitude increases.
• In the stratosphere, temperature generally increases as altitude increases due to the increased absorption of ultraviolet radiation by the ozone layer.