Into the Abyss Lesson 4 Quiz Review

Noah decides to test both types of signals during a thunderstorm, when there is a lot of interference. Which signals are more reliable during thunderstorms?

• Analog signals—the larger range of values in these signals means they are more likely to be transmitted successfully through atmospheric noise.
• Digital signals—there are only two values in this type of signal, so atmospheric noise is less likely to cause problems due to interference.
• Neither signal performs better—you can see in the data that noise has affected the wave structure of both signals.

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NGSS.MS-PS4-3

Many countries have changed from analog to digital television. Before choosing between technology that transmits analog or digital signals, governments gather information to compare the two signal types. Which signal should a government choose to transmit TV content over a long distance and why?

• They should use an analog signal, because the information is encoded as a continuous set of values and not just one of two values.
• They should use an analog signal, because the structure of its waveform is more reliable and cannot easily be disrupted.
• They should use a digital signal, because the TV content doesn’t need to be encoded.
• They should use a digital signal, because it can be transmitted a long way without being disrupted by interference.

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NGSS.MS-PS4-3

Select the information that describes how Miko listens to music. Miko mostly listens to digitally-recorded music, so he uses 1. (MP3s, cassettes) to play tracks. He listens to some of his favorite music on vinyl records, as he likes the quality of the sound. The vinyl records use analog signals, which means the music 2. (is encoded in 1s and 0s, is encoded as a continuous set of values).

• 1. MP3s, 2. is encoded in 1s and 0s
• 1. MP3s, 2. is encoded as a continuous set of values
• 1. cassettes, 2. is encoded in 1s and 0s
• 1. cassettes, 2. is encoded as a continuous set of values

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NGSS.MS-PS4-3

Noah decides to test both types of signals during a thunderstorm, when there is a lot of interference. Which signals are more reliable during thunderstorms? 

• Analog signals—the larger range of values in these signals means they are more likely to be transmitted successfully through atmospheric noise.

• Digital signals—there are only two values in this type of signal, so atmospheric noise is less likely to cause problems due to interference.

• Neither signal performs better—you can see in the data that noise has affected the wave structure of both signals.

Tags

NGSS.MS-PS4-3

Check the correct box to show whether the description applies to the structure of analog or digital signals: Continuous range of values

• Digital Signal

• Analog Signal

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Check the correct box to show whether the description applies to the structure of analog or digital signals: Uses exact recordings

• Digital Signal

• Analog Signal

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Check the correct box to show whether the description applies to the structure of analog or digital signals: Sent as one of two values

• Digital Signal

• Analog Signal

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