Eve Robert Worksheet - Speed of Sound 1. The speed of sound, like all waves, depends on the through which it travels. Sound travels fastest in (solids, liquids, gases) and slowest in 2. The speed of sound in air depends on the of the air. At O'C, the speed of sound in air is. _m/s. For every degree above O'C, the speed _by 0.6 m/s. For every degree below OC, the speed by 0.6 m/s. The equation is: Vsound = m/s + (0.6 m/s (will be given to you on quizzes and test) 3. What is the speed of sound at 35 c? 4. What is the speed of sound at -20.C? 5. Other than the velocity/temperature equation, there are two important equations involving the speed of sound: V = __ V = Rearrange one equation to solve for: f = : 2= Rearrange the other to solve for: d = 6. A 320 Hz tuning fork will produce a wave of what wavelength in air at 22 C? 7. We see a bolt of lightning and 4 s later we hear the thunderclap. If the speed of sound in air is 0.2 mils, how far away is the lightning? 8. How many seconds will it take an echo to reach your ears if you yell toward a mountain 82 m away on a day when the air temperature is O'C? PHYSICSFundamentals 2004, GPB 12-02