Question

Which layer of the Earth's atmosphere contains the ozone layer?

• A. Troposphere
• B. Stratosphere
• C. Mesosphere
• D. Thermosphere

Hint:

Remember the order of atmospheric layers from the Earth's surface upward: \textbf{Troposphere $\rightarrow$ Stratosphere $\rightarrow$ Mesosphere $\rightarrow$ Thermosphere $\rightarrow$ Exosphere} A useful trick: \textbf{“TSMTE”}. The \textbf{Ozone Layer lies in the Stratosphere}, which is the second layer of the atmosphere.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The Earth's atmosphere is vertically divided into several layers based on temperature and composition: Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.
The ozone layer is a highly concentrated region of ozone (\(O_3\)) molecules that plays a crucial role in absorbing harmful ultraviolet (UV) radiation from the Sun.
Step 2: Detailed Explanation:
The Troposphere is the lowest layer where all weather events occur.
Above the troposphere lies the Stratosphere, which extends from about 10 km to 50 km above the Earth's surface.
The ozone layer is primarily situated within the lower portion of the stratosphere, roughly between 15 km and 35 km altitude.
Because the ozone layer absorbs UV radiation, the temperature in the stratosphere increases with altitude, making it stable and free of weather disturbances.
Step 3: Final Answer:
The ozone layer is contained within the Stratosphere.