To test how sound travels through solids, a simple phone can be made by tying a plastic cup at each end of a string (about 30 feet). Two people, one person at each end of the string, can transmit sound to one another by speaking into the cup at his or her end. The sound travels through the string in waves and reaches the other person's cup. Think about the sound can be changed in this investigation,
Which statements are true about how sounds heard through the cup phone can be changed?
To make the pitch of the sounds higher, students should use thicker string
Shortening the string between the cups will increase the volume
Students who wrap their hands around their cups will hear sound better than those who do not
To increase the volume on the opposite end of the string, ask a third person to pinch the string in the middle.
Lengthening the string between the cups will increase the volume.
Sound travels better through string than in air because sound travels best through solids.
A string with more tension carries sound better than one with less tension
Waves
gical advancement