Question

The temperature of the troposphere:

• A. increases with height
• B. decreases with height
• C. remain same with height
• D. None of the above

Answer 1

The correct option is B decreases with height

The troposphere contains 75 percent of atmosphere's mass and most of the atmosphere's water vapor. Water vapor concentration varies from trace amounts in Polar Regions to nearly 4 percent in the tropics. Most prevalent gases are nitrogen (78%) and oxygen (21%), with the remaining 1% consisting of argon, (0.9% percent) and traces of hydrogen,ozone (a form of oxygen) and other constituents.

Temperature and water vapor content in the troposphere decrease rapidly with altitude. Water vapor plays a major role in regulating air temperature because it absorbs solar energy and thermal radiation from the planet's surface.