Could you help to explain if the word closed is an adjective or verb in this sentence: The window is closed.?

Question

Is it a passive sentence? Please explain why it is or not a passive sentence..

Answer 1

I would definitely describe the sentence as "passive voice" (active would be more toward using the word "close" as a verb). In this case I would also describe "closed" as a description of "window" therefore its function would be adjective.

Answer 2

In this sentence it's an adjective because it's describing the window.  It's passive because there's no action involved.

If the sentence were "I closed the window," it's a verb because it's describing an action, therefore is an active sentence.