Ozone in the stratosphere captures \(\underline{\hspace{1cm}}\) and protects us from harmful effects.
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- UV A, UV B and UV C radiations completely
- UV A and UV B radiations completely
- UV B partially and UV C radiations completely
- UV A completely and UV B and UV C radiations partially
The Correct Option is C
Solution and Explanation
Step 1: Identify the types of UV radiation.
Ultraviolet radiation from the sun is classified into three types based on wavelength: UV-A (longest wavelength), UV-B (medium), and UV-C (shortest wavelength, most energetic).
Step 2: Describe the interaction of each type with the ozone layer.
- UV-C: This is the most harmful type of UV radiation. The stratospheric ozone layer is extremely effective at absorbing it, so virtually none reaches the Earth's surface. It is absorbed completely.
- UV-B: This radiation is also very harmful. The ozone layer absorbs a significant portion (around 95%) of it, but some still gets through. It is absorbed partially.
- UV-A: This is the least energetic type of UV radiation. The ozone layer absorbs very little of it, and most of it reaches the surface.
Conclusion: The most accurate description is that the ozone layer absorbs UV-C completely and UV-B partially.
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