Properties Of Sound Flashcards
Just like any other wave, sound also exhibits reflection.
Reflection of sound
is usually described as the turning back of a wave as it hits a barrier.
REFLECTION
= is an example of a reflected
sound
ECHO
= refers to the
multiple reflections or echoes in a certain place.
REVERBERATION
Often occurs in a small room with height, width, and length dimensions of approximately 17 m or less.
This best fits the bathroom which enhances the voice.
Reverberation
Reverberation often occurs in a small room with height, width, and length dimensions of approximately ———
This best fits the bathroom which enhances the voice.
17 m or less
Is another application of sound reflection.
Echo sounding
This is used by scientists to map the sea floor and to determine the depth of the ocean or sea.
Echo sounding
=is described as the change in speed of sound when it encounters a medium or different density.
REFRACTION
This change in speed of sound during refraction is also manifested as a sort of
“ ——— “ of sound waves.
bending
When sound propagates in air, where the temperature changes with altitude, sound bends towards the ———— region.
hotter
The ——— is due to the different refractive indices of air because of the difference in temperature.
refraction
All waves normally travel in straight lines, but they bend around obstacles and through small openings.
Diffraction of sound
Since the wavelength of sound waves is usually several centimeters long, sound waves bend around the objects they commonly encounter.
Diffraction of sound
When waves from different sources traveling through the same medium at the same time meet, they overlap.
This overlapping of waves is called
Interference
