In that sentence, "Where" is an interrogative and an adverb.
http://www.answers.com/topic/where
In the question "Where are the spoons?", what is "where"?
adverb? preposition?
please explain why
2 answers
It is a relative adverb. .Whether a "wh-word" functions as a relative pronoun or a relative adverb is determined by its function in the subordinated relative clause.