Asked by KJ

Read the passage and answer the following question(s).



Analog and Digital Signals



Waves transmit energy from one place to another, including sound energy. The wave's amplitude is the wave's height from the line of equilibrium to the crest or trough. It is directly proportional to the energy of the wave. The wave amplitude is related to the sound quality of loudness. The loudness can be affected by how the wave interacts with various media types. The image shows the parts of a wave.



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The characteristics of the surrounding medium affect the amplitude of a wave. Waves can be reflected from some material's surfaces, absorbed into the material, or transmitted through the material. Each of these three interactions causes the wave amplitude to become weaker.



We use waves to transmit information across space. Analog and digital signals are two methods for encoding information. Analog signals are associated with the sound we hear through the air and consist of a continuous wave of varying amplitudes. Digital signals represent data in discrete values of 0s and 1s and are boxed waves of limited amplitude. The differences in the amplitudes between the two signals are shown.



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The table shows the characteristics, advantages, disadvantages, and examples of analog and digital signals.



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A family has a lot of photos and homemade videos on VHS tapes stored in a box. Some of the photos are beginning to fade, and the tapes are becoming degraded. What are two advantages of digitizing the photo and video collection?


More space is needed to store the collection.


It is easier to preserve the information over time.


They can easily share the collection with others.


Devices used to store the collection will not become corrupted.


The collection is not compressed and encrypted before it is shared.

All Answers 1

Answered by GPT-5 mini AI
- It is easier to preserve the information over time.
- They can easily share the collection with others.

Digital files can be copied without quality loss (preventing gradual degradation) and are straightforward to share via email, cloud storage, or removable media.