Question

a slow-motion model of a periodic sound wave is shown below. each dot represents an air particle. the gray surface on the left vibrates, causing sound waves to travel through the air. analyze the model to complete the descriptions. - the sound waves move from left to right - the individual air particles move back and forth - the sound waves transfer from one location to another. animation credit matter energy

Explanation:

For the first blank (sound waves move): In a sound wave, the wave itself (the disturbance) moves from the source (left, where the vibrating surface is) to the right, so "from left to right" is correct. For the second blank (individual air particles move): Air particles in a sound wave undergo simple harmonic motion, moving back and forth (longitudinal wave), so "back and forth" is correct. For the third blank (sound waves transfer): Sound waves transfer energy (they carry energy through the air; matter isn't transferred over long distances, just energy via particle vibrations), so "energy" is correct.

Answer:

• The sound waves move: from left to right
• The individual air particles move: back and forth
• The sound waves transfer: energy