Saturday, May 12, 2007

Science

What Do I Know About Sound?
Sound is a voice that comes from a living thing or an instrument.

What does this words mean?
Vibration: Vibration means shaking.
Wave: Wave means a sound that flows in the air.
Frequency: Frequency means the measurement of sound.

Can Sound Travel Under The Water?
Sound under the water can go 5 times faster then the air.

Is there sound in the moon?
The sound in the moon is not so large.

How Do String Instruments Make Sound?
String Instruments make sound by making the string vibrate.


How Do Wind Instrument Work?
Wind Instruments work by blowing it and let go our fingers one by one to make a note.
Bibliography:
http://library.thinkquest.org/28170/36.html, http://www.enchantedlearning.com/subjects/astronomy/moon/, http://en.wikipedia.org/wiki/String_instrument, http://en.wikipedia.org/wiki/Wind_instrument.

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