If a sound wave goes from a cold air region to a hot air region, its wavelength will
-
increase
- decrease
- decrease then increase
- remain constant
The correct answer is: A
Explanation
When a sound wave moves from a region of cold air to a region of hot air, its wavelength will increase. This occurs because sound travels more quickly in warmer air due to the heightened energy of the air molecules, which allows for a longer wavelength while the frequency remains unchanged.