Options are not provided in the question. The complete question is as following:
A few boys are sledding on snow in their favorite park. They notice that it is harder to hear someone shouting from the top of the hill to the bottom than it is in the summertime. What factor is most likely affecting the sound of their shouting?
a. Altitude
b. Frequency
c. Pressure
d. Temperature
Answer:
d. temperature
Explanation:
There are several factors affecting the sound including altitude, pressure, frequency and temperature.
<em>Sound waves require a midium to travel and produced due to vibration of molecules in the medium.</em>
As mentioned, the shouting is difficult to hear during winters in comparison to summers. Temperature is one of the important factor affecting sound as sound is a form of kinetc energy. Molecules present at lower temperature have less energy and thus vibrate slowly. Hence, the molecules vibrate slowly, the sound waves are unable to travel properly and shouting is not audible properly during winters.
Hence, the correct otpion is d. Temperature.
