Here's why:
* Short vowels have a short, quick sound. They are often represented by the first sound of the alphabet (a, e, i, o, u).
* In the word "orange", the "O" has the short "o" sound, like in "hot" or "cot".
While the "O" in "orange" is a short vowel, it's important to note that it has a slightly different sound than the "O" in "hot" or "cot". It's a more relaxed, open sound, often described as the "short-o" sound.