difference between sound waves and waves in the sea or the ripples on water
Answers
Answer:
Hölã
Explanation:
Water waves shake energy over the surface of the sea, while sound waves thump energy through the body of the air. Sound waves are compression waves. They're also called longitudinal waves because the air vibrates along the same direction as the wave travels.
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Answer:
How are sound wave different from the waves in the sea or the ripples on water?
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There are different sorts of waves.
The ones on the left are called body waves; they depend on the media they are traveling through to supply the “restoral force” that opposes the initial force and thereafter keeps the wave going. The two forms on the right are different - they are surface waves, and their restoral force is gravity.
Sound waves are the compressional waves of the upper left. They alternately compress and they rarify the medium; when they reach your ears they move the eardrum, which is interpreted as sound.
Ripples on a pond are, of course, surface waves; they are usually a combination of both Rayleigh and Love waves.
The form in the lower left is called an S wave, a name used in seismology because that is where they were first studied. They are a wiggling motion of the body. They are peculiar because they do not propagate through a liquid (or gas), as compressional waves do. Liquid media do not have a restoral force in the sideways direction - they simply slide in the direction of the initial force and then stay there.
In practical terms, compressional waves can generally bear higher frequencies and are the fastest propagating. The surface waves depend on gravity which is a rather weak restoral force, so they are lower frequency - often a few Hz to seconds per cycle. They surface waves usually carry the highest energies because they can sustain the highest amplitudes of motion. S waves often do the most damage to buildings in earthquakes because many building materials are weak in that mode of movement.
Tsunami waves are a different sort of waveform altogether. They are surface waves of low frequency, but their energy extends through the entire oceanic column. That’s what makes them such killers when they approach shore - all that energy gets concentrated in a (relatively) small water column.