Question

Evaluate these statements regarding atmospheric layers: Which of the above is/are correct?

1. Most weather phenomena occur in the stratosphere.
2. The ozone layer is primarily found in the troposphere.

• A. All are wrong
• B. i only wrong
• C. ii only wrong
• D. i, ii wrong

Answer 1

Answer:

A. All are wrong

Atmospheric Layers

Troposphere:

• The troposphere is the lowest layer of Earth's atmosphere, extending from the surface up to an average altitude of about 12 kilometers (7.5 miles).

• Most weather phenomena, including clouds, rain, snow, storms, and wind, occur within this layer.

• Temperature generally decreases with increasing altitude in the troposphere.

• This layer contains about 75-80% of the atmosphere's mass and almost all of its water vapor.

Stratosphere:

• The stratosphere lies above the troposphere, extending from about 12 to 50 kilometers (7.5 to 31 miles) above the Earth's surface.

• The ozone layer is primarily located within the lower portion of the stratosphere, roughly between 15 and 35 kilometers (9 to 22 miles) altitude.

• The ozone layer absorbs most of the Sun's harmful ultraviolet (UV) radiation, playing a critical role in protecting life on Earth.

• Unlike the troposphere, temperature generally increases with altitude in the stratosphere due to the absorption of UV radiation by ozone.

• Commercial airplanes often fly in the lower stratosphere to avoid the turbulent weather of the troposphere.