Question

directions: actively read and annotate the following passage and answer the questions below. how guitars work sound waves or matter waves are produced by a vibrating or oscillating object. as a guitar string vibrates, it sets surrounding air molecules into vibrational motion. the frequency at which these air molecules vibrate is equal to the frequency of vibration of the guitar string. the back and forth vibrations of the surrounding air molecules creates a pressure wave which travels outward from its source. this pressure wave consists of compressions and rarefactions. the compressions are regions of high pressure, where the air molecules are compressed into a small region of space. the rarefactions are regions of low pressure, where the air molecules are spread apart. this alternating pattern of compressions and rarefactions is known as a sound wave. a guitar string vibrating by itself does not produce a very loud sound. the string itself disturbs very little air since its small surface area makes very little contact with surrounding air molecules. however, if the guitar string is attached to a larger object, such as a wooden sound box, then more air is disturbed. the guitar string forces the sound box to begin vibrating at the same frequency as the string. the sound box in turn forces surrounding air molecules into vibrational motion. because of the large surface area of the sound box, more air molecules are set into vibrational motion. this produces a more audible sound. 1. **how is sound produced? explain using evidence from the text.

Explanation:

Sound is produced by a vibrating object. A guitar - string's vibration sets air molecules in motion, creating pressure waves of compressions and rarefactions. Attaching the string to a sound - box increases the disturbance of air molecules, making the sound more audible.

Answer:

Sound is produced when a vibrating or oscillating object, like a guitar string, sets surrounding air molecules into vibrational motion, creating pressure waves of compressions and rarefactions.