Question

Judging from the diagram, which of the following statements is true?

A. Sound travels at the same speed through both cold and warm air.
B. Sound travels faster through cold air than through warm air.
C. A sound wave's wavelength shortens when it travels from cold air into warm air.
D. Sound travels faster through warm air than through cold air.​

Answer 1

Answer: D, sound travels through warm air faster than cold

Step-by-step explanation:

Molecules move faster and transmit more sound vibrations in warm air.