Question

Which statement is true for a sound wave entering an area of warmer air?

A:The wave travels faster and with the same wavelength.
B:The wave travels at the same speed but with an increased wavelength.
C:The wave travels at the same speed and with the same wavelength.
D:The wave travels slower and with an increased wavelength.
E:The wave travels faster and with an increased wavelength.

Answer 1

the answer is A........The sound is transferred by collisions of molecules. Therefore sound waves will travel faster on warm air because collisions of molecules of air in warm air are greater.

Answer 2

Answer;

A:The wave travels faster and with the same wavelength.

Explanation;

• Sound waves are mechanical waves which require a material medium for transmission.
• The transmission of sound waves involves the vibration of particles of the material medium thus movement of energy from one point to another.
• Sound waves entering a warmer air means that the kinetic energy of the air particles will increase and thus the vibration of particles will be increased and thus the speed of transmission of sound waves increases.