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It gets quieter for a couple of reasons. The initial amount of energy that produces a sound is finite. There is only so much and no more, however loud the initial sound is. As the sound expands outward, it is expanding in every direction until it hits something that absorbs it. The sound energy is absorbed by the ground, by the air, and by everything that is in its path. A lot of the sound expands upward and is dissipated, even if there is nobody above to hear it. So the energy is getting absorbed by something, right from the beginning. Also, because the sound wave is opening up somewhat like a bubble, the energy must thin out for that reason alone, independently of its absorption by things. If a sound has the same intensity a half mile away as it does 100 meters away, it would mean that the total energy in the 'bubble' would have multiplied many, many times, since no matter where you are on the radius of the half-mile bubble, you would hear it at the original intensity. This cannot happen; there is only so much energy from the initial sound and no more.
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What do you call the occurrence of a sound getting louder as it approaches and quieter as it travels away?
It is called sound spreading. The sound wave is strongest at the source and the wave spreads out as it is farther away
What lets you know that the source of a sound is moving toward or away from you?
When a sound-source moves toward you, its pitch gets higher and the sound gets louder. When it moves away, the pitch lowers and it gets quieter. The frequency change is called the Doppler shift.
Why do sounds grow fainter as you get further away from the sound source.?
They spread out, reducing the energy per unit of surface.
Does sound travel faster than air or water?
Water. Sound is a vibration of molecules, and in air, the molecules are further apart than in water, so the sound wave needs less energy to move each particle away from the source.
What happens to a sound as the thing making the sound moves further away?
It popes
What happens to sound waves as they move away from the source of the sound?
They get distant and more quieter
Does wind affect the pitch of a whistle?
the pitch doesnt actually change but it might sound quieter to you because the sound it being blown away
The sound of a bullfrog attracts a mate How much quieter is the sound if the mate is 4 times further away if the sound follows the inverse square law?
Well, it has to follow the inverse square law, so that as distance increases, the sound intensity drops by the square of the proportionate change in distance. The intensity will be 1/16 at 4 times the distance.
What do you call the occurrence of a sound getting louder as it approaches and quieter as it travels away?
It is called sound spreading. The sound wave is strongest at the source and the wave spreads out as it is farther away
Why do sounds get quieter the further away you are from the source?
Louder or fainter means more intense or less intense of sound vibrations respectively.Intensity in turn is the energy per unit area.Imagine the source of sound to be at the centre of a sphere. When you are far away then the radius of the sphere would be larger and thus the surface area of the sphere also becomes larger.As the energy given out by the source of sound is divided by larger area to get the intensity its value becomes lesser. Hence fainter.Ear drums and microphone diaphragms are moved by sound pressure.Note: Sound power (sound intensity) is the cause - and the sound pressure is the effect. The effect is of particular interest to the sound engineer.Another Perspective:The intensity (loudness) of sound decreases with the square of the distance from the source.
Why do sounds grow fainter as you get further away from the sound source.?
They spread out, reducing the energy per unit of surface.
What lets you know that the source of a sound is moving toward or away from you?
When a sound-source moves toward you, its pitch gets higher and the sound gets louder. When it moves away, the pitch lowers and it gets quieter. The frequency change is called the Doppler shift.
What happens to the particles if the mass increases?
they expand (get further away) and become lighter so it will rise :-)
How does global warming affect mosquitoes?
As countries become warmer, they also become more suitable for mosquitoes. So mosquitoes are gradually spreading further and further away from the equator, north and south.
Does sound change if heard from 40 yards away?
The sound doesn't necessarily change, but it may become delayed from when the sound first was started, and the sound may become softer than up close. An example of this would be someone kicking a ball and you not being able to hear it until about 2 seconds after it happens. it all has to do with our ears receiving the sound.
Do you hear thunder after you see lightning because it's further away?
no light comes before sound its the law of conservation of energy
How loud is a quarry?
The loudness of a quarry depends on the type of quarry and how far away you are measuring its sound waves. If measured close up, the decibels will be higher than from further away.
