Question

In which atmospheric layer does the ozonosphere exist?

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

Hint:

Remember the atmospheric layers: \[ \boxed{ \begin{aligned} \text{Troposphere} &\rightarrow \text{Weather}, \text{Stratosphere} &\rightarrow \text{Ozone Layer}, \text{Mesosphere} &\rightarrow \text{Meteor Burning}, \text{Thermosphere} &\rightarrow \text{Ionosphere and Auroras}. \end{aligned} } \] Mnemonic: “S for Stratosphere, S for Shield (Ozone Shield).”

Answer 1

The Correct Option is B

Concept: The ozone layer (ozonosphere) is concentrated in the Stratosphere, approximately 15--35 km above the Earth's surface. It absorbs most of the Sun's harmful ultraviolet (UV) radiation.

Step 1: Recall the atmospheric layer containing ozone. The ozonosphere is located in the \[ \boxed{\text{Stratosphere}} \]

Step 2: Eliminate the incorrect options. \[ \begin{aligned} A. &\ \text{Troposphere} \rightarrow \text{Weather phenomena occur here.} B. &\ \text{Stratosphere} \rightarrow \text{Contains the ozone layer.}\checkmark C. &\ \text{Mesosphere} \rightarrow \text{Meteors burn in this layer.} D. &\ \text{Thermosphere} \rightarrow \text{Contains the ionosphere and auroras.} \end{aligned} \] Hence, \[ \boxed{\text{(B)}} \]