* trap: The vowel sound in "trap" is a short "a" sound, like the "a" in "cat." Short vowel sound.
* drip: The vowel sound in "drip" is a short "i" sound, like the "i" in "pin." Short vowel sound.
* plot: The vowel sound in "plot" is a short "o" sound, like the "o" in "hot." Short vowel sound.
* cup: The vowel sound in "cup" is a short "u" sound, like the "u" in "sun." Short vowel sound.
* jump: The vowel sound in "jump" is a short "u" sound, like the "u" in "sun." Short vowel sound.
* white: The vowel sound in "white" is a long "i" sound, like the "i" in "bike." Not a short vowel sound.
* skip: The vowel sound in "skip" is a short "i" sound, like the "i" in "pin." Short vowel sound.
So, the words with short vowel sounds are: trap, drip, plot, cup, jump, and skip.