Final answer:
High pitch in voice occurs when the vocal folds are tense and the air pressure is high. This condition is a result of tightened muscles in the larynx and increased airflow, producing a high frequency sound that our ears perceive as high-pitched.
Step-by-step explanation:
The question addresses how high pitch is achieved in human vocalization. When the vocal folds are tense, and there is high air pressure, a high pitch is created. The vocal folds open and close rhythmically, building up pressure. As air passes the vocal cords, they vibrate and produce sound. The pitch of the voice is altered by the larynx muscles, which either relax or tighten, consequently changing the tension on the vocal cords. Therefore, the correct answer to the student's question is: High Pitch is when your vocal folds are tense, and there is high air pressure.
It's also worth noting that gas moves from an area of high pressure to an area of low pressure. Moreover, high frequency sounds are perceived as high-pitched, such as the chirp of a bird, whereas a low frequency sound like the roar of a lion is perceived as low-pitched. In addition, a sound source moving towards you increases in pitch if the source's speed increases, creating a high-pitched sound wave.