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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.
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Why shadow get smaller and bigger in a scientifically explination?
The size of a shadow has everything to do with placement of the light source, the object, and the background on which the shadow is cast. In general, if the light source is close to the object and the background is further away then the shadow is larger than the object. The opposite is true if the light source is further away. Another part of the equation has to do with angles. This is what we commonly observe happining to shadows at different times of the day; long shadows in the morning and evening and smaller shadows around the middle of the day.
Is 839719 closer to 830000 or 840000?
840,000 is closer as 281 away 830,000 is further 9,719 away
What is inverse square law and an example?
inverse square law is the law that states the intensity of the light, sound etc is directly proportional to 1/ distance squared meaning the further you are from the source the less intense the light etc will be. e.g. an object 1m away from a light source 1/1^2=1 , 2m 1/2^2= 1/4 and so forth
Which depth cue accounts for why parallel lines appear to grow closer together the further away they are?
monocular constancy
How many trapeziums can be drawn on a base length n?
An infinite number. Draw one and then keep moving its parallel side further and further away. And you did not even look at the trapeziums that could be generated by varying the length of that side.
