Question

which of the following correctly describes one way an instrument amplifies sound?

Answer 1

a-by forcing air across a reed

Answer 2

b-by tightening a plucked string

Answer 3

c-by bouncing vibrations off surfaces inside a chamber of air

Answer 4

i think its C

Answer 5

am i right?

Answer 6

r u here @bibby

Answer 7

I'm half away playing a game. I'll think about it in a minute

Answer 8

forget it it was C 100%

Answer 9

Good job :D