Density is a confusing concept
.The animation contains a visual explanation of density
and explains the daily phenomena of life like why a balloon
filled with warm air rises but a deflated one falls down,
it gives a rigorous explanation of density supported by
examples. This educational animation will clarify most doubts
about density.
Density is calculated as mass divided by volume. It is
usually measured in kilograms per cubic meter. It measures
the weight corresponding to size of any object. In other
words, it describes the degree of compactness of a substance.
More closely packed together the atoms of an element or
molecules of a matter the denser that matter would be. Since
different substances have different densities, density measurements
therefore can be used in identifying substances.
The mass divided by volume formula holds true for liquids,
the density of a solid or gaseous material changes with
volume for the given weight. This can be visualized when
melting of wax or sugar occurs, the volume changes as state
changes. Similar confusion occurs when ice melts to water.
Questions that are answered in the animation are:
How does the phase change in substance affect its density?
What is density?
Will density change on moon?
Which is denser water or ice?
How is density of solid, liquid and gas measured?
Why density of solids is more than liquid and gases?
Change of density with temperature
Change of density with altitude.
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