Are oo and or yoo the same vowel sound?

You're asking about the vowel sound in words like "too" and "you". They are not the same vowel sound.

* "oo" in words like "too", "moon", "food" represents the long "u" sound. It's a pure vowel sound, often described as the sound of a "flute".

* "yoo" in words like "you", "few", "Tuesday" represents the diphthong "yu". This sound starts with the "y" sound and then glides into the "oo" sound. It's a gliding sound, moving from one vowel position to another.

So, while the two sounds may sound similar, the first is a single vowel sound, while the second is a combination of two vowel sounds.