EM Waves Uses and Effects

EM Waves Uses and Effects

Assessment

Assessment

Created by

Norwena Penuliar

Science

10th Grade

75 plays

Hard

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20 questions

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1.

Multiple Choice

2 mins

1 pt

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

2 mins

1 pt

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

2 mins

1 pt

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

2 mins

1 pt

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

2 mins

1 pt

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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