Why do so many question words start with W?

As regards question words beginning with “w”, this is a feature of all Germanic languages (the group to which English belongs). The negative “n” is common not only to Germanic languages but also to the other main European language groups, i.e. Romance languages (non, nessun, nihil …) and slavonic languages (nyet).

What are the W questions called?

wh-words
Unsourced material may be challenged and removed. An interrogative word or question word is a function word used to ask a question, such as what, which, when, where, who, whom, whose, why, whether and how. They are sometimes called wh-words, because in English most of them start with wh- (compare Five Ws).

What are the 5 W’s in order?

They include Who, What, When Where, and Why. The 5 Ws are often mentioned in journalism (cf. news style), research, and police investigations….What are the 5 Ws?