What is the difference in terms of sound between different vowels?

Question

I know when you create a different shape with your mouth it makes a different vowel (a, e, i, u, o) but what is actually the difference in the sound, how can our ears tell the difference?

In: Physics

Answer 1

I live in the Philippines. The people here seem to pronounce the vowels (English) Ah-eh-ih-uh-ooh.