Here's why:
* Short vowel sounds are typically found in words with one syllable, and the vowel sound is pronounced quickly and sharply. Examples include: cat, bed, hop, rug.
* "Acrobat" has two syllables: ac-ro-bat. The vowel sound in the first syllable, "ac", is a diphthong (a vowel sound that combines two vowel sounds).
* The vowel sound in the second syllable, "ro", is a long vowel sound, similar to the "o" in "go".
Therefore, "acrobat" does not contain any short vowel sounds.