Question

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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Row Headers
Analog Signals

Digital Signals

Both

has a higher range of amplitudes

has a higher range of amplitudes and Analog Signals has a higher range of amplitudes and Digital Signals has a higher range of amplitudes and Both
transmits data from one place to another

transmits data from one place to another and Analog Signals transmits data from one place to another and Digital Signals transmits data from one place to another and Both
provides a more reliable way to transmit data

provides a more reliable way to transmit data and Analog Signals provides a more reliable way to transmit data and Digital Signals provides a more reliable way to transmit data and Both
transmits sound as we naturally hear it

transmits sound as we naturally hear it and Analog Signals transmits sound as we naturally hear it and Digital Signals transmits sound as we naturally hear it and Both

Answer 1

Here are the answers with brief justifications from the passage:

- has a higher range of amplitudes: Analog Signals
(Analog waves are continuous and have varying amplitudes.)

- transmits data from one place to another: Both
(Both analog and digital signals are used to transmit information.)

- provides a more reliable way to transmit data: Digital Signals
(Digital signals are noted as more reliable for transmission.)

- transmits sound as we naturally hear it: Analog Signals
(Analog signals are associated with the sound we hear through the air.)