Ind.Practice8_Sound Waves When a sound wave passes through water, water molecules are displaced O Back and forth, perpendicular to the direction the wave is moving O Back and forth, parallel to the direction the wave is moving Up and down, perpendicular to the direction the wave is moving Up and down, parallel to the direction the wave is movingInd.Practice8_Sound Waves Speed of a sound wave is directly proportional to the medium's and inversely proportional to medium's density, rigidity frequency, wavelength rigidity, density wavelength, frequencyInd.Practice8_Sound Waves Velocity of sound waves is higher in liquids than in gases because liquids have higher density than gases O sound travels with more amplitude in liquids than in gases liquids are comparatively more stiff than gases (gases are easily compressible) liquids have weaker intermolecular forces than gasesInd.Practice8_Sound Waves The table below lists several sound waves of different frequencies and amplitudes that are sent to travel through various mediums. In which medium is the wave speed the slowest? Frequency Medium Medium Density Amplitude (cm) (Hz) (g/cm3) at normal temperature (293 K) and pressure (1 atm) 440 neon 0.901 2.0 392 helium 0. 179 1.7 185 nitrogen 1.251 1.0 220 argon 1.784 1.5 helium argon Oneon nitrogenInd. Practice8_Sound Waves Two sound waves travel at the same speed. The frequency of wave A is 1000 Hz, and the frequency of wave B is 4000 Hz. Wavelength A is O equal to the length of wavelength B one-quarter the length of wavelength B. one-half the length of wavelength B. four times the length of wavelength B.Ind.Practice8 Sound Waves Larger speakers can make louder sounds. This is because the volume of sound is related to The distance between compressions The frequency of the compressions The time between compressions. The amplitude of the compressions