I assume you want words longer than "I" and "A". Or are those OK?
Words which don't have any of the five standard vowels (a, e, i, o, u) have a 'y' instead. Some examples of those are:sky why by cry fry my ply rythm why
No, you cannot get a word with 8 letters that doesn't have any vowels. It's impossible, but you can get a 7 letter word without vowels, which is rhythms. There is, however, several obsolete words without vowels; symphysy, for example (which means the union of two bodies).
Other than interjections such as "Ooo!" and "Aieee!" (OED variant of aiyee), there are almost no English words consisting of vowels, or having only vowel sounds.There are the one-letter words I and a, but the others listed as Scrabble words are not everyday English:AA - AE - AI - AIA -EA - EAU - EE - EUOI - EUOUAE -IO - OE - OI - OO - OUOf these, only eau, from French, seems familiar. The term euoi is ostensibly a cry from a Bacchian revelry and euouae is a mnemonic of the vowels in seculorum amen (last two words of a Gregorian chant in Latin).
A consonant on its own cannot form a complete syllable. Any syllable must contain contain a vowel or a combination of vowels). Consonants can be added to the beginning or end of a syllable to modify its sound. Ie. O can be considered a syllable, but so can MO and MOCK.
You can type any word using only your left hand.
no
English doesn't have 25 vowels.
There are any words that are only comprised of vowels. Examples include adieu, audio, lieu, auto, Ohio, amoebae, aqueous, ionium, voodoo, odious and quinoa.
aaiaeaueeeuoieuouaeIiooioo
There isn't any natural language composed only of vowels.
No. That is quite frankly not possible. There are, however, Japanese names like Ai that only have vowels
alibicombogumbomambojumbolimbomambamaybe
A few words which do not include any vowels would be things such as xylyl. There are a full list which you can find and browse through on the Scrabble Finder website.
to be honest i dont know
None without any more letters, specifically vowels
cry dry fly myth i can go on too
There are worsheets for long vowels at school worksheets dot com. Their site has all the tools your son would need to practice using long vowels in school.