Final answer:
The word 'revision' has both long and short vowels. The 'i' is pronounced as a long vowel and the 'e' and 'o' are pronounced as short vowels.
Step-by-step explanation:
The word 'revision' has both long and short vowels. The vowels 'e' and 'o' are short while 'i' is long. This is because a long vowel is a vowel sound that is pronounced the same way as the name of the letter itself. For example, the long 'i' in 'revision' sounds like 'eye', which is the name of the letter 'i'. On the other hand, a short vowel is a vowel sound that doesn't have this same pronunciation. In 'revision', 'e' and 'o' have short vowel sounds.
Learn more about Vowel Sounds