Final answer:
As air temperature increases, the speed of sound in air also increases because particles have more kinetic energy and transmit sound waves more quickly.
Step-by-step explanation:
The speed of sound in air is closely related to the temperature of the air. As the temperature increases, the particles within the air move faster due to increased kinetic energy. This movement facilitates a quicker transmission of sound waves, thus increasing the speed of sound. It is noted that for air, the speed of sound at 0°C is approximately 331 m/s, while it increases to around 343 m/s at 20°C which is less than a 4% change. However, this relationship shows that with each increase in temperature, the speed of sound is also likely to increase.