Environment And Road Safety Education And Violence Against Women And Children And Drug Abuse 2021 Exam With Answers

Practice Mode:
47.

Speaking of the Ozone layer, what harmful product does this part of the atmosphere filter?

A: X-rays
B: Infra Red Radiations
C: Ultra Violet Radiations
D: Gamma Radiations

The answer is: C

Explanation

The Ozone layer in the Earth's atmosphere filters out Ultra Violet (UV) radiations.

The Ozone layer is a region in the Earth's stratosphere that contains a high concentration of ozone (O3) molecules. It plays a crucial role in absorbing and filtering out a significant portion of the Sun's harmful UV radiation. UV radiation consists of three types: UV-A, UV-B, and UV-C.

The ozone molecules in the Ozone layer absorb most of the incoming UV-B and a portion of UV-C radiation, preventing them from reaching the Earth's surface. UV-B radiation is particularly harmful to living organisms, as it can cause various health issues, including skin cancer, cataracts, and suppression of the immune system.

It's important to note that the Ozone layer does not filter X-rays, infra-red radiations, or gamma radiations. X-rays, infra-red radiations, and gamma radiations have different wavelengths and are not significantly affected by the presence of the Ozone layer.