Radio Waves

Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. They have frequencies from 300 gigahertz (GHz) to as low as 3 kilohertz (kHz).

Properties of Radio Waves:

• Wavelength: Radio waves have long wavelengths, ranging from about 1 millimeter to 100 kilometers.
• Frequency: They have low frequencies, typically from about 3 kHz to 300 GHz.
• Transmission: Radio waves can travel through the vacuum of space as well as through air, solid materials, and non-metallic liquids.
• Uses: Radio waves are used for various forms of communication, including radio and television broadcasting, cell phone signals, GPS, and Wi-Fi.

How Radio Waves Work:

Radio waves are produced by the acceleration of electrical charges. They can be created by transmitters and received by antennas, which then convert the waves into electrical signals for transmission or processing.

Study Guide:

1. What is the range of frequencies for radio waves?
2. Describe the properties of radio waves.
3. What are some common uses of radio waves?
4. How are radio waves produced and transmitted?