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What is density and density of the earth.

 What is density ?


Density of a matter is its mass per unit volume. It is measured by the measure of its mass contained in one cubic centimetre of its volume. Density of a matter gives us an idea of how close, or how far apart, its molecules are. An iron plate feels heavier than an aluminum plate of the same volume, simply because iron is denser than aluminum.


DENSITY OF THE EARTH:-


Average density of the earth surface is only 2.6 to 3.3 gram/cubic cm. Average density of the matter near the earth's centre is about 11 gram/ cubic cm. It increases upto 13-14 gram/cubic cm at the centre of the earth. However, in respect of artificial satellites average density of the earth is 5.5 gram/cubic cm as a whole.


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