The Nature of Light: Radio Waves

The video explains the properties and uses of radio waves, which have long wavelengths and low frequencies. It covers their applications in airport radar, satellite communication, and television broadcasting. Additionally, it discusses how high-frequency radio waves, known as microwaves, are used in microwave ovens for cooking.

What characteristic of radio waves places them on the left side of the electromagnetic spectrum?

• Short wavelengths and high frequencies

• Short wavelengths and low frequencies

• Long wavelengths and low frequencies

• Long wavelengths and high frequencies

In which of the following applications are radio waves used to ensure the safe travel of airplanes?

• Television broadcasting

• Airport radar

• Satellite communication

• Microwave ovens

How do radio waves assist in satellite communication?

• By cooking food

• By transmitting signals from satellites to dishes on Earth

• By tracking airplanes

• By producing TV program sound

What is the role of radio waves in television sets that use antennas?

• To cook food

• To track airplanes

• To transmit signals from satellites

• To produce the picture and sound of a TV program

What type of radio waves are used in microwave ovens?

• Low-frequency radio waves

• High-frequency radio waves

• Ultra-high-frequency radio waves

• Medium-frequency radio waves