"When you put the tuning fork up to the ping pong ball it made it bounce because of the vibrations."Jacob
"On the drums the bigger the drum was the more sound it made."Jude
"When you put the drum on the table the sound waves were trapped and it made a lower sound than when you picked them up they were louder."Aidan
"On the ping pong ball the louder the sound from the tuning fork the more the ball bounced."Saxton