How People Produce Sound

Guiding Question: How do people produce sound

Hypothesis: I think people produce sound through their vocal cords changing shape and their lips and tongue moving around.

Materials

Partner

Voice

paper

pencil

Procedure

First you get with you partner and read the introduction, then you say words or letters to find out how your lips move. After that you record what you find out. Lastly you put what you found out into a lab.

Data analysis:

Different letters require different movements for the lips, breath, and vocal cords. For vowels you use your breath and vocal cords, for consonants you use your teeth, lips, and tongue. letters start with your mouth closed, and some with your mouth open. This way we can produce sounds with others can understand and therefore creating language. Other animals don't have such precise vocal cords and use body language to communicate.

Conclusion:

People have over the years managed to produce sound by changing their vocal cords. With vocal cords people have been able produce sounds much more accurate then other organisms. The only drawback with our improved vocal cords is that now we can't breath and drink at the same time. The vocal cords work by making sounds by emitting a sound and then when it goes through the vocal cords they stretch, widen, get smaller to change the sound. In this lab I have learnt the basics on how the vocal cords work and I have started to appreciate how complicated the human body is and how much harder it would be to have what we have today without vocal cords.

Further Inquiry:

If I were to do this lab again I would try to find out about how we have evolved our vocal cords over the centuries and I would also like to learn more about how vocal cords work and how life would be for us and animals without them