1. What type of electromagnetic radiation is used by weather radar systems to detect precipitation? a. X rays b. visible light c. radio waves d. microwaves e. infrared radiation

The answer is **(d) microwaves**.<br /><br />Weather radar systems use microwaves to detect precipitation. Microwaves are a type of electromagnetic radiation with wavelengths longer than infrared but shorter than radio waves. These wavelengths are well-suited for interacting with raindrops and other forms of precipitation. The radar emits microwave pulses, and the reflected signals are analyzed to determine the location, intensity, and movement of precipitation.<br />