62. A teacher posts the following words from a reading selection on a word wall. Boil, Oil, Coin, Join. Which of the following vowel sounds is present in each word?
Answer: C
The vowel sound present in each word is a diphthong.
Each of the words—Boil, Oil, Coin, and Join—contains a vowel sound that combines two vowel sounds into a single syllable, which is characteristic of diphthongs.
A) Short vowel
Short vowels are typically single sounds that do not combine with another vowel sound within the same syllable. Words containing short vowels include "cat" and "bed," which do not apply to the listed words that exhibit a more complex vowel sound.
B) Schwa
The schwa sound is a neutral vowel sound often represented by an unstressed vowel in words, such as the 'a' in "sofa" or the 'e' in "taken." None of the provided words contain a schwa sound, as they feature a distinct, pronounced combination of vowel sounds.
C) Diphthong
Diphthongs occur when two vowel sounds are combined in a single syllable, resulting in a glide from one vowel sound to another. Each of the words listed—Boil, Oil, Coin, and Join—exhibits this characteristic, thereby confirming that they feature diphthongs.
D) Long vowel
Long vowels are those that are pronounced the same as the letter name itself, such as the 'a' in "cake" or the 'e' in "see." The words in the question do not fit this category, as they do not have singular long vowel sounds but rather a combination that creates a diphthong.
Conclusion
The correct identification of diphthongs in the words Boil, Oil, Coin, and Join distinguishes them from options such as short vowels, schwa, and long vowels, which fail to account for the vowel sound complexity in these examples. Therefore, option C is definitively correct, as it accurately describes the vowel sounds present in each word.