Question

Mac and Suzanne cut holes in the bottom of two cups and connect them with a string. When Mac whispers into one cup, Suzanne can hear him through the other. What is the best reason to explain why this happens?

a
Sound waves produce an echo.
b
Sound waves can travel great distances.
c
Sound waves from whispering have a higher frequency.
d
Sound waves travel better through solids than gases.

Answer 1

Answer: d) sound waves travel better through solids than gases.

Step-by-step explanation:

The sound waves travel through the string and reverberate inside the cup on the other side to make noise.