Radio Waves

Front

What are radio waves?

Back

Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. They are used for communication, including radio and television broadcasting.

Front

How do FM waves transmit information?

Back

FM (Frequency Modulation) waves transmit information by varying the frequency of the wave.

Front

What remains constant in AM waves?

Back

In AM (Amplitude Modulation) waves, the frequency remains constant while the amplitude varies.

Front

What type of waves carry information to your TV and radio?

Back

Radio waves carry information to your TV and radio.

Front

Which waves can travel long distances by reflecting off the atmosphere?

Back

AM waves can travel long distances by reflecting off the atmosphere and curving around the Earth.

Front

True or False: There are no materials that interfere with radio wave transmission.

Back

False. There are materials that can interfere with radio wave transmission.

Front

What is the difference between AM and FM waves?

Back

AM waves vary in amplitude, while FM waves vary in frequency.

Front

What is the speed of radio waves in a vacuum?

Back

Radio waves travel at the speed of light, approximately 299,792 kilometers per second (186,282 miles per second).

Front

What is the range of frequencies for radio waves?

Back

Radio waves typically range from 3 kHz to 300 GHz.

Front

What is the role of antennas in radio wave transmission?

Back

Antennas are used to transmit and receive radio waves, converting electrical energy into radio waves and vice versa.