Which radiations are trapped inside the earth and not allowed to escape from the earth's atmosphere?

Options

A. Ultraviolet rays
B. Infrared rays
C. Gamma rays
D. Visible rays

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the types of radiation that are trapped within the Earth's atmosphere and do not escape back into space.

2. **Identifying Types of Radiation**: There are several types of radiation emitted by the sun, including ultraviolet (UV) rays, visible light, and infrared (IR) waves.

3. **Role of Greenhouse Gases**: Greenhouse gases, such as carbon dioxide (CO2), methane (CH4), and water vapor (H2O), play a crucial role in trapping certain types of radiation.

4. **Focusing on Infrared Radiation**: Among the different types of radiation, infrared radiation is primarily responsible for the greenhouse effect. When sunlight reaches the Earth, some of it is absorbed and then re-emitted as infrared radiation.

5. **Trapping of Infrared Radiation**: The greenhouse gases absorb the infrared radiation emitted from the Earth's surface and re-radiate it in all directions, including back towards the Earth, preventing it from escaping into space.

6. **Conclusion**: The radiation that is trapped inside the Earth’s atmosphere and contributes to global warming is primarily infrared radiation.

**Final Answer**: Infrared waves are the radiations that are trapped inside the Earth and not allowed to escape from the Earth's atmosphere.

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