Question

Which of the following statements is true?
A.The troposphere is thinner at the poles
B. The troposphere is thicker at the poles
A) Only A
B) Only B
C) Both A and B
D) None of these

Answer 1

Hint: The troposphere is the lowest layer of the Earth's atmosphere and the location of practically all weather phenomena. It makes up 75% of the bulk of the atmosphere and 95% of the total mass of water vapour and aerosols.

Complete answer:
The troposphere is the Earth's atmosphere's lowest layer. The troposphere is home to the majority of clouds, and it is also where practically all weather happens. At the poles, the troposphere is thinner, whereas, at the equator, it is thicker. The tropical troposphere's average thickness is around 7 kilometres higher than the troposphere's average thickness at the poles.

Let us look at the given options:
A) Only A: This is the correct option. At the poles, the troposphere is thinner. The troposphere's height fluctuates from place to place and season to season. At the pole, the troposphere is about 8 kilometres high, whereas, at the equator, it is around 16 kilometres high.
B) Only B: This option is incorrect because the troposphere is thicker at the equator and thinner at the poles. hence
C) Both A and B: This option is incorrect because only Option A is true.
D) None of these: This option is incorrect because Option A is true.

Thus, the correct answer is Option (A) Only A.

Note: The planetary boundary layer is the lowest section of the troposphere, where airflow is influenced by friction with the Earth's surface. Depending on the landform and time of day, this layer can be anywhere from a few hundred metres to two kilometres deep. The tropopause, or boundary between the troposphere and stratosphere, is located atop the troposphere.