Thread: About sound wave

can sound wave or light wave reflected by fluid or surface of fluid?(Please give me the example,thank you)
after reflection,the speed,wavelength and frequency will change?

i am troubled by this question..please help me to solve thank you...

I bet the boy in this film won,t run in the water.

http://www.youtube.com/watch?v=c49dS76KhGc

Originally Posted by ~James~

can sound wave or light wave reflected by fluid or surface of fluid?(Please give me the example,thank you).

Yes.
Go and look at the reflection of clouds in a pond or lake.

Originally Posted by ~James~

after reflection,the speed,wavelength and frequency will change?
..

Read this.

but can "sound" wave reflected by surface of gas and liquid?can it reflected "in" gas and liquid by fluid?(Example,thank you)

wavelength and speed will change?but....
some book:wavelength ,speed and frequecy will not change after reflection...
which is true...tell me directly..thank you

Well, if you were underwater in a swimming pool, would you hear sounds from above?

A reflected wave has the same properties as the incident wave.

i can hear the sound from above..but this properties are not related to the reflection of wave..we can hear sound from above because sound can tavel through fluid...
same question..help me to solve..thank you

Originally Posted by ~James~

i can hear the sound from above..but this properties are not related to the reflection of wave..we can hear sound from above because sound can tavel through fluid...
same question..help me to solve..thank you

Anytime you have a boundary between two mediums(like the surface of water), wave will reflect off it. Thus sound in the air will reflect off the surface of the water and sound in the water will reflect off of the surface also.