4 The opposite of fast. (4)
5 When there is no sound, it is ..... (5)
7 At night when there's no light, it is .... (4)
8 The opposite of day. (5)
9 The direction that things fall when you drop them. (4)

1 A racing car can go .... (4)
2 You do this to a whistle to make sound. (4)
3 The ......... of a guitar string makes a sound. (9)
6 The sound when you burst a balloon, or how you play a drum. (4)
9 24 hours. (3)