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PPT: Sound | Science Class 9 PDF Download

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 Page 1


S o u n d
Page 2


S o u n d
 Dogs have super
hearing powers
Dolphins can catch
sounds that are way
beyond our reach
Page 3


S o u n d
 Dogs have super
hearing powers
Dolphins can catch
sounds that are way
beyond our reach
What is Sound?
Production of Sound
Propagation of Sound
Reflection
Range of Hearing
Sound
Applications of Ultrasound
Technology
Page 4


S o u n d
 Dogs have super
hearing powers
Dolphins can catch
sounds that are way
beyond our reach
What is Sound?
Production of Sound
Propagation of Sound
Reflection
Range of Hearing
Sound
Applications of Ultrasound
Technology
Sound is a type of energy that we can hear. It is created when
something vibrates or moves back and forth quickly. 
Page 5


S o u n d
 Dogs have super
hearing powers
Dolphins can catch
sounds that are way
beyond our reach
What is Sound?
Production of Sound
Propagation of Sound
Reflection
Range of Hearing
Sound
Applications of Ultrasound
Technology
Sound is a type of energy that we can hear. It is created when
something vibrates or moves back and forth quickly. 
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