Here's why:
* Short Vowel Sound: The "o" in "roar" makes a short vowel sound, similar to the "o" in "hot" or "lot".
* Long Vowel Sound: A long vowel sound is typically represented by a vowel followed by a silent "e" (like "fate" or "bike") or a double vowel (like "moon" or "feet").
Therefore, "roar" has a short "o" sound.