Pretty good
This was well made and put together, and an interesting test for Newgrounds enthusiasts. I liked it though there was the odd mistake - I don't think 'featre' is spelt like that, and according to the Newgrounds history page Tom Fulp was unable to get Newground as his website (as you seemed to suggest Newgrounds was originally) because it was already taken.
A few suggestions if you were to make a sequal - maybe add more interactivity for example giving users the option to change the style or music. Also why not pick a random 20 questions from a much larger batch, that would improve replayability. I'm not too sure about having a score and lives, why not get rid of the lives and do something like lose points for incorrect answers? But these are just suggestions and you submission is still very good