Which of the following electromagnetic waves are used in weather forecasting?

Options

A. Infrared waves
B. Radio waves
C. Microwaves
D. Visible rays

Answer

To determine which electromagnetic waves are used in weather forecasting, we can analyze the options provided: infrared waves, radio waves, microwaves, and visible rays.

### Step-by-Step Solution:

1. **Understanding Electromagnetic Waves**:
- Electromagnetic waves are classified based on their wavelength and frequency. They include radio waves, microwaves, infrared waves, visible light, ultraviolet rays, X-rays, and gamma rays.

2. **Role of Infrared Waves in Weather Forecasting**:
- Infrared waves are particularly useful in meteorology because they can detect heat emitted by objects, including clouds and the Earth's surface.

3. **Interaction of Clouds**:
- When clouds interact, they can produce infrared radiation. This radiation is crucial for meteorologists as it provides information about temperature and moisture content in the atmosphere.

4. **Detection of Infrared Radiation**:
- Meteorologists use satellite technology equipped with infrared sensors to capture this radiation. This data helps in predicting weather patterns, such as identifying storm systems or changes in temperature.

5. **Conclusion**:
- Based on the analysis, the electromagnetic waves used in weather forecasting are **infrared waves**.

### Final Answer:
Infrared waves are used in weather forecasting.