How do I know what is a short and what is a long vowel sound?

Answer 1

The long vowel sounds are the sounds that sound likt the letters, A, E, I, O and U.
Examples: skAte
strEam
hIke
Over
Unicorn

The short vowel sounds are spelled with the same letters, but have a shorter, or softer sound.
Examples: a- apple
e- every
i- in
o- look
u- under