EM Waves Uses and Effects
Assessment
•
Norwena Penuliar
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Science
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10th Grade
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75 plays
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Hard
Student preview
20 questions
Show answers
1.
Multiple Choice
In radio communication, sound waves are fed to the radio station microphone and heard through a radio. What do you consider a radio station?
Receiver
Transmitter- Receiver
Transmitter
Radio communication
2.
Multiple Choice
What is the function of the loudspeaker in radio communication?
converts electrical signals to sound waves
converts sound waves to electrical signals
increases the intensity of the sound
selects the frequency received
3.
Multiple Choice
In radio communication, for sound to be transmitted and received, the following processes are involved. Arrange the processes in correct order.
I. Amplification
II. Modulation
III. Reception
IV. Demodulation
I, II, III, IV
II, I, IV, III
II, I, IV, III
III, I, II, IV
4.
Multiple Choice
Why is it that in order for the sound waves to be transmitted and received, they should combine with the carrier waves or radio waves?
Because radio waves can travel in space
Because radio waves can travel over a long distance in a short time.
Because sound signals cannot travel over a long distance in a short time
Because sound signals can travel over a long distance in a long time.
5.
Multiple Choice
What is the function of a broadcast antenna?
it allows a radio transmitter to send energy into space
It allows a receiver to pick up energy from space
It combines the electrical signals and the carrier waves
It separates the electrical signals from the carrier waves.
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