1. Visible light: This is the part of the electromagnetic spectrum that our eyes can see. It's responsible for the colors we perceive and is crucial for photosynthesis.
2. Near-infrared radiation (NIR): This is radiation slightly beyond the visible spectrum, with wavelengths longer than visible light. It's also used by plants for photosynthesis and contributes to the warming of the Earth's surface.
3. Far-infrared radiation (FIR): This is radiation with even longer wavelengths than NIR. It's responsible for the heat we feel from the sun and is absorbed and emitted by the atmosphere.
4. Some ultraviolet radiation (UV): While most UV radiation is absorbed by the ozone layer, a small amount of UV-A radiation does reach the Earth's surface. This can cause sunburn and skin cancer, so it's important to protect yourself from excessive exposure.
Other types of radiation:
* Cosmic rays: These are high-energy particles from outer space that reach the Earth's surface. They are absorbed by the atmosphere and don't significantly contribute to the energy balance.
* Radio waves: These are long-wavelength electromagnetic waves that can penetrate the atmosphere and reach the Earth's surface. They are used for communication, broadcasting, and other purposes.
Important note: While these forms of radiation reach the Earth's surface, the atmosphere filters out most harmful radiation, such as most of the UV radiation, X-rays, and gamma rays. The ozone layer is particularly crucial in absorbing most of the UV radiation, protecting life on Earth.
