How People Produce Sound

Guiding Question: How do people produce sound?
Hypothesis: Sound is produced by the vibration of the vocal chords.  
Overview
When sound is produced it come out of a part in the throat called th larynx. In the larynx there are a type of tissue called vocal cords. When air comes out it vibrates the the chords and produces sound. The tighter the tighter the cord the higher the pitch. As the muscles are stretched the chord produces note that has a high frequency and as a result it produces a very high note. The difference between consonants and vowels are the way you speak the word. Consonants are produced when the breath is some what stopped by the lips, tongue or teeth. Vowels are produced by a free breath, in other words vowels are not stopped by the lips, tongue or teeth.

Objective
Observe how your vocal cords affect the sounds you make, and also observe how your tongue, teeth, lips affect the the sounds you make.
Procedure
1). Pronounce the words in the list below to your partner. Pay attention to how you pronounce the first letter of each word.

2). Together decide if you are stopping your breath when you are pronouncing the first letter of each word. Use a check mark to record in the Data and Observations section if the consonant is stopped or open.


Word List
1) Boat   2) Dog
3) Fan     3) Vote
4) Kite     5) Gate
6) Pen     7) Zebra
8) Sister   9) Tone


Results
 The position of your teeth are the same when you pronounce the letters "d" and "t".
The difference between the sound of "d" and the sound of a "v" is the sound of "d" is the movement of the tongue and the sound of "v" is the movement of lips/mouth. For the sounds "G" and "K"  you use your lips and voice, but not your tongue and teeth. These are the consonants that use the lips and not the tongue and teeth.


Ugh! Laryngitis!



Getting laryngitis when in a school musicals  is not very good. Laryngitis is when the vocal tissue gets inflamed or swollen and it causes a blockage in the larynx, a a result the air going through the larynx is very rough. It is easy to get laryngitis when it is flu season. Some of the symptoms of laryngitis are:

• Fever
• Hoarse voice 
• Swollen lymph nodes

To treat this virus refer to your doctor or:

• Soothing tea
• Salt water gargles 
• Pain Killer
• Rest 

To prevent getting laryngitis, you can do the following: 

• Wash your hand regularly
• Avoid people with flu like symptoms
• Stay clean in big crowds  

  Any other questions here is a video about laryngitis, by LiveStrong.com. Dr. Susan L. MCGLADDERY- a doctor working in Budapest, Hungry.

Laryngitis Health Byte