Radio Waves and Applications

Question 1

Which property best makes radio waves safe for diagnosing illnesses through magnetic resonance imaging? Which property best makes radio waves useful for space research?

Revolt · Accepted Answer

low energy of radio waves; Selection 1: low energy of radio waves; Selection 2: long wavelengths of radio waves

Question 2

✔ long wavelengths of radio wavesfast speed of radio waveslow energy of radio waves

Revolt · Accepted Answer

long wavelengths of radio waves

Question 3

Question 3

Revolt · Accepted Answer

frequency modulation

Question 4

Question 4

Revolt · Accepted Answer

both amplitude and frequency modulation

Question 5

Which type of modulation is used in these technologies? AM programs: Cell phones: FM programs: Television:

Revolt · Accepted Answer

amplitude modulation; Selection 1: amplitude modulation; Selection 2: frequency modulation; Selection 3: frequency modulation; Selection 4: both amplitude and frequency modulation

Question 6

Which type of modulation is applied to radio-controlled toys?

Revolt · Accepted Answer

pulse

Question 7

Which statement correctly differentiates between transmitters and receivers?

Revolt · Accepted Answer

Transmitters send radio waves, and receivers capture radio waves.

Question 8

Order the steps to describe how information is sent. A signal is produced. A signal is seen, heard, or used. Radio waves are modulated and amplified. Radio waves are amplified and demodulated.

Revolt · Accepted Answer

1; Selection 1: 1; Selection 2: 4; Selection 3: 2; Selection 4: 3

Question 9

Question 9

Revolt · Accepted Answer

frequency modulation

Question 10

Question 10

Revolt · Accepted Answer

4

Radio Waves and Applications Answers

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