Radio Waves and Applications

Question 1

The diagram shows a device that uses radio waves.

Question 2

What type of modulation is typically used by broadcasting stations to transmit pictures on television screens?

Question 3

Lena would like to be able to know her exact location on a map as she travels across the country. Which technology would best help Lena?

Revolt · Accepted Answer

D: GPS, because it uses satellites that provide position and velocity data

Question 4

Which radio wave technologies would be unaffected by satellites that are not working properly?

Revolt · Accepted Answer

C: MRI and radio telescopes

Question 5

antennaamplifiermodulatortransmitter

Revolt · Accepted Answer

B: amplifier

Question 6

Savanna drew a diagram to show how radio waves are modified for use in the field of broadcasting.

Question 7

Paul made a diagram to compare and contrast radio waves that are used for communication and for broadcasting. Which labels belong in the areas marked X, Y, and Z?

Revolt · Accepted Answer

A: X: May use LF, HF, and UHF wavesY: Travels at the speed of lightZ: May use MF and VHF waves

Question 8

In 2010, scientists obtained an image of an asteroid that was dangerously close to Earth. Which technology did the scientists likely use to capture the image?

Question 9

Huan made a chart to study for an exam about radio waves.Which headings best complete the chart?

Revolt · Accepted Answer

D: X: FMY: AM

Question 10

The process of changing a property of a wave to transmit information is called .

Radio Waves and Applications Answers

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