Complete each of the. following sentences by choosing the correct term from the word bank.
loudness, echoes, pitch, noise, solids, sound quality, vibrations, wavelength frequency, wave, vacuum, amplitude, lesser, infrasonics, ultrasonics
_________is unpleasant sound produced by irregular wave patterns.

Explanation

To complete the sentence, we need to identify the correct term from the word bank that describes an unpleasant sound produced by irregular wave patterns.

1. **Understanding the Sentence**: The sentence states that it is an "unpleasant sound produced by irregular wave patterns." We need to think about what kind of sound fits this description.

2. **Analyzing the Word Bank**: The terms provided in the word bank include: loudness, echoes, pitch, noise, solids, sound quality, vibrations, wavelength, frequency, wave, vacuum, amplitude, lesser, infrasonics, ultrasonics.

3. **Identifying the Correct Term**: Among the words listed, "noise" is commonly associated with unpleasant sounds. Noise is characterized by irregular wave patterns, which makes it different from music, which has regular patterns.

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