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answer the following two questions
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Q.1 liquids molecules are not packed as tightly as solids. And gases are very loosely packed. The spacing of the molecules enables sound to travel much faster through a solid than a gas. Sound travels about 4 times faster and farther in water than it does in air.
Q.2. 1. String instruments generate a sound when the string is made to vibrate using any variety of means (plucking, strumming, hitting, etc.). The sound or note is dependent on the length of the vibrating portion of the string, its mass, and the tension to which the string has been tuned or placed. Some examples of string instruments include the violin, guitar, and harp.
2. Wind instruments produce sound when a column of air inside of them is made to vibrate by the player blowing air into them. Many wind instruments use a reed to vibrate the air. The sound or note generated is relative to the shape of the instrument and to the length of the column of air. This group is typically subdivided into brass and woodwind instruments. Some examples of wind instruments include the clarinet, trumpet, flute, and saxophone.
3. Percussion instruments create sound when struck or hit. Percussion instruments can generate sounds with or without pitch. The type of sound created is determined by the shape and material of the part of the instrument to be struck, as well as the shape of the resonating cavity. Some examples of percussion instruments include drums, bells, the triangle, and the xylophone.
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Q.2. 1. String instruments generate a sound when the string is made to vibrate using any variety of means (plucking, strumming, hitting, etc.). The sound or note is dependent on the length of the vibrating portion of the string, its mass, and the tension to which the string has been tuned or placed. Some examples of string instruments include the violin, guitar, and harp.
2. Wind instruments produce sound when a column of air inside of them is made to vibrate by the player blowing air into them. Many wind instruments use a reed to vibrate the air. The sound or note generated is relative to the shape of the instrument and to the length of the column of air. This group is typically subdivided into brass and woodwind instruments. Some examples of wind instruments include the clarinet, trumpet, flute, and saxophone.
3. Percussion instruments create sound when struck or hit. Percussion instruments can generate sounds with or without pitch. The type of sound created is determined by the shape and material of the part of the instrument to be struck, as well as the shape of the resonating cavity. Some examples of percussion instruments include drums, bells, the triangle, and the xylophone.
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