Which pair demonstrates unvoiced fricatives?

Which pair demonstrates unvoiced fricatives?

• A. /b/ and /d/
• B. /f/ and /v/
• C. /s/ and /z/
• D. /th/ and /h/

Answer: (D)

To identify a correct pair of unvoiced fricatives, it's essential to understand the characteristics of unvoiced fricatives in phonetics. Unvoiced fricatives are sounds produced without vibrating the vocal cords and involve the continuous flow of air through a narrow constriction in the vocal tract. The pair consisting of /th/ and /h/ includes the unvoiced fricative /h/ and the unvoiced fricative /θ/ (as in "think"). Both are produced without voicing, fitting the criteria for unvoiced fricatives. In contrast, the other options contain voiced sounds or pairs that do not reflect unvoiced fricatives. For example, the pair /f/ and /v/ includes /v/, which is a voiced sound, while /b/ and /d/ are also voiced. The pair /s/ and /z/ includes /z/, which is voiced as well. Therefore, the pair of /th/ and /h/ accurately exemplifies unvoiced fricatives, reinforcing the concept of how these sounds are classified in phonetics.

To identify a correct pair of unvoiced fricatives, it's essential to understand the characteristics of unvoiced fricatives in phonetics. Unvoiced fricatives are sounds produced without vibrating the vocal cords and involve the continuous flow of air through a narrow constriction in the vocal tract.

The pair consisting of /th/ and /h/ includes the unvoiced fricative /h/ and the unvoiced fricative /θ/ (as in "think"). Both are produced without voicing, fitting the criteria for unvoiced fricatives.

In contrast, the other options contain voiced sounds or pairs that do not reflect unvoiced fricatives. For example, the pair /f/ and /v/ includes /v/, which is a voiced sound, while /b/ and /d/ are also voiced. The pair /s/ and /z/ includes /z/, which is voiced as well.

Therefore, the pair of /th/ and /h/ accurately exemplifies unvoiced fricatives, reinforcing the concept of how these sounds are classified in phonetics.