SOUND

3. Drum
Tabla
Violine
Veena
Flute

5.  drum
 flute
 violin
 veena
 tabla
 Stretched membrane
 Air column
 Stretched string
 Stretched string
 Stretched membrane
MUSICAL
INSTRUMENT
VIBRATING PART
PRODUCING SOUND

6. Turning fork is
invented by british
musician John
Shore. Turning forks
vibrate when strike it
against a surface or
with an
object.different
turning forks have
different
frequencies.

10. The intensity of sound is
proportional to the amplitude of the sound.
The intensity of the sound is the amount of
energy passing through unit area per second
perpendicular to the direction of
propagation. Its unit is W/m^2

11. o Loudness is the measure of audibility
produced by sound in a person.
o It depends on
Intensity
Frequency
Efficiency
o Unit is Decibel(db)

12.  Amplitude.
 Surface area.
 Distance between source and listener.
 Density of the medium.

13.  Normal breathing
 Soft whisper
 Normal conversation
 Busy traffic
 Average factory
 10db
 30db
 60db
 80db
 90db

15.  Chriping of crickets
 Whistles
 Birds sound
 Voice of women
 Cow
 Drum
 Lion,crow,duck
 Voice of man