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Digital vs. Analog Quiz

1. The graph below shows an analog signal recorded in an environment with zero noise.
Image Credit: Science Buddies

Which of the following graphs best represents what the signal would look like if it was recorded in a noisy environment?
Image Credit: Science Buddies

Correct.
Incorrect.
2. In your own words, explain why digital signals are better than analog signals for sending or storing information.
3. The sensor app on your phone includes a light sensor. Imagine that you are doing this project again, but instead of using sound to send a signal, you use light (by aiming a flashlight at the phone). What are some possible sources of "noise" in your classroom that could affect the signal?
4. The graph below shows an example digital signal with noise. Which of the following statements is true?
Image Credit: Science Buddies

Correct.
Incorrect.
5. The graph below shows an example analog signal with noise. Which of the following statements is true?
Image Credit: Science Buddies

Correct.
Incorrect.

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