Wh- questions usually start with a word beginning with wh-, but "how" is also included. The wh- words are: what, when, where, who, whom, which, whose, why, and how.

Is how a WH word?

Glossary of Grammatical and Rhetorical Terms

In English grammar, a "wh- word" is one of the function words used to begin a wh- question: what, who, whom, whose, which, when, where, why, and how.

What order are Wh-questions?

[The order of subject Wh-questions is: question word + verb + object.]