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You will learn about …
 Vibration
 characteristics of sound
 Noise and music
 Noise
SOUND
 A vibration is a rapid back and forth
movement of a body about its mean
position .
1. VIBRATION
 1 Sound travels in the form of waves .
2 Waves are characterised by three basis ;
 frequency
 Amplitude
 Quality
3 Characteristics of a sound are ;
 Pitch
 Loudness
 Quality
2. CHARACTERISTICS OF
SOUND
 Unwanted , unpleasant and very loud sounds
are called noise .
 Sounds produced by musical instruments
like sitar , piano , guitar , etc .
 Produce pleasing effects to our ears and
mind.
 Pleasant and soft sounds are called music
.
 It does not cause any health hazards .
3. NOISE AND MUSIC
 Noise from any source that causes
disturbance or discomfort of any kinds in
the environment is called noise pollution .
4. NOISE POLLUTION

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Ankush;;king

  • 1.
  • 2. You will learn about …  Vibration  characteristics of sound  Noise and music  Noise SOUND
  • 3.  A vibration is a rapid back and forth movement of a body about its mean position . 1. VIBRATION
  • 4.  1 Sound travels in the form of waves . 2 Waves are characterised by three basis ;  frequency  Amplitude  Quality 3 Characteristics of a sound are ;  Pitch  Loudness  Quality 2. CHARACTERISTICS OF SOUND
  • 5.  Unwanted , unpleasant and very loud sounds are called noise .  Sounds produced by musical instruments like sitar , piano , guitar , etc .  Produce pleasing effects to our ears and mind.  Pleasant and soft sounds are called music .  It does not cause any health hazards . 3. NOISE AND MUSIC
  • 6.  Noise from any source that causes disturbance or discomfort of any kinds in the environment is called noise pollution . 4. NOISE POLLUTION