Mechanical VWaves MCAS review 1. Which of the following statements describes the motion of air particles as a sound wave moves across a room? A. The air particles move in circles inside the sound wave. B. The air particles move across the room with the sound wave. C. The air particles move back and forth, parallel to the direction of the sound wave. D. The air particles move back and forth, perpendicular to the direction of the sound wave. 2. Which of the following types of waves is longitudinal? A. light wave B. microwave C. radio wave Dsound wave 3. The frequency of a note played on a piano is 262 Hz. Given that the velocity of sound at 20°C is 343 m/s, what is the wavelength of the note? A. 0.25 m B. 0.76 m C. 1.31 m D. 4.05 m 4. The table shows the speed of sound in various substances under different conditions. Speed (m/s) Temperature (°C) Substance State carbon dioxide 280 gas 51 methane 466 41 gas helium 972 gas ethanol 1144 liquid liquid lubricating oil 1461 liquid 25 water 1402 25 lead 2060 solid 20 3450 solid 6100 solid Wood 20 steel 20 Which of the following conclusions is best supported by the data in the table? A. Sound generally travels at a faster speed in solid substances than in liquid substances. B. Sound generally travels at a faster speed in gaseous substances than in liquid substances. C. Sound generally travels at a slower when the temperature of a substance is increased. D. Sound generally travels at a slower speed when the temperature of a substance is decreased.

Mechanical VWaves MCAS review 1. Which of the following statements describes the motion of air particles as a sound wave moves across a room? A. The air particles move in circles inside the sound wave. B. The air particles move across the room with the sound wave. C. The air particles move back and forth, parallel to the direction of the sound wave. D. The air particles move back and forth, perpendicular to the direction of the sound wave. 2. Which of the following types of waves is longitudinal? A. light wave B. microwave C. radio wave Dsound wave 3. The frequency of a note played on a piano is 262 Hz. Given that the velocity of sound at 20°C is 343 m/s, what is the wavelength of the note? A. 0.25 m B. 0.76 m C. 1.31 m D. 4.05 m 4. The table shows the speed of sound in various substances under different conditions. Speed (m/s) Temperature (°C) Substance State carbon dioxide 280 gas 51 methane 466 41 gas helium 972 gas ethanol 1144 liquid liquid lubricating oil 1461 liquid 25 water 1402 25 lead 2060 solid 20 3450 solid 6100 solid Wood 20 steel 20 Which of the following conclusions is best supported by the data in the table? A. Sound generally travels at a faster speed in solid substances than in liquid substances. B. Sound generally travels at a faster speed in gaseous substances than in liquid substances. C. Sound generally travels at a slower when the temperature of a substance is increased. D. Sound generally travels at a slower speed when the temperature of a substance is decreased.