Complete the statement. The speed of sound is directly affected by the temperature of the medium. The hotter the medium the (1.) the sound travels. Heat, just like sound, is a form of kinetic energy. At higher temperatures, particles have (2.) energy (kinetic) and thus, vibrate (3.). And when particles vibrate faster, there will be (4.) collisions per unit time. With more collisions per unit time, (5.) is transferred more efficiently resulting in sound traveling quickly. At 0°C, the speed of sound in air is (6.) m/s. The speed of sound is dependent on temperature of the medium where an increase is
observed with an (7.) in temperature. Specifically, the speed of sound increases by (8.) m/s with every increase of 1.0°C On the other hand, when sound propagates in air where the temperature changes with altitude, sound bends towards the (9.) region. In this case, refraction happens. The refraction is due to the different refractive indices of air because of the difference in (10.).