Flashcard on Radio Waves

Front

What are radio waves?

Back

Electromagnetic waves with long wavelengths and low frequencies

Front

Who discovered radio waves?

Back

Heinrich Hertz

Front

What is the primary use of radio waves in communication?

Back

Broadcasting audio and video wirelessly

Front

Which device converts electrical energy into radio waves?

Back

Transmitter

Front

Which type of modulation varies the amplitude of radio waves?

Back

Amplitude Modulation (AM)

Front

What is a major challenge of using radio waves for communication? Options: They cannot travel through vacuum., Signal interference., High cost of generating radio waves., Inability to transmit sound.

Back

Signal interference.

Front

Which characteristic describes high-frequency radio waves?

Back

They have higher energy and carry more data.

Front

What is one benefit of using digital modulation techniques?

Back

It reduces interference and improves data transmission.

Front

Which application uses radio waves for broadcasting music and news? Options: Satellite systems, FM/AM radio, Bluetooth devices, Internet routers

Back

FM/AM radio

Front

What phenomenon occurs when multiple radio signals interfere with each other?

Back

Signal interference