A list of English language short vowel sounds can be found in early reading textbooks and on many educational websites for the English language, such as PhonicsOnTheWeb.com. Most lists contain information on long vowels and examples.
A vowel is usually short when it is in a single syllable or word and surrounded by consonants or follows another vowel, as in 'bed' or 'bake.' However, no writing conventions serve to differentiate short vowels from long vowels. Short vowels differentiate themselves from long vowels in that a short vowel does not sound like its name while a long vowel does, as in 'mat' (short) and 'mate' (long). In fact, all English vowels have long and short sounds, as well as a third unstressed sound called a schwa.