Measuring Volume of Liquid

Volume of a liquid:
Solids have defined shapes either regular or irregular. If the shape of a solid is regular, then its volume is calculated by geometrical means and if not, it can be figured out indirectly. In any case, the volume is defined in fixed directions.

However, liquids have no definite shape. They occupy the available space of a container. They spread over the entire the area of section and stands up to a height.  Hence the volume of a liquid is the volume of its container up to the height of the liquid level. For this reason, the volume of hollow shapes are called as ‘capacity’ of the shape.Please express your views of this topic liquid state by commenting on blog.

This concept is mainly used in measuring volume of liquid.


Containers used for measuring liquid volume

A graduated beaker can be used to know the volume of an available liquid. As mentioned earlier, the liquid volume is directly proportional to the height of its container of uniform cross section. Therefore, in a graduated beaker, the readings are calibrated to directly give the value of the volume.

To pick up a specified volume of a liquid accurately (for example, in laboratory tests), burettes are used. A burette is a graduated tube with a cock at the bottom. The liquid is filled in the tube and the volume to the desired reading is adjusted by using the cock.

Liquids in larger quantities are measured by calculating the volume of the container up to the liquid level using geometry.

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Measuring volume of liquid from density:


Density of an item is its mass per unit volume. Also density of an item is a constant factor. Therefore in cases where the liquids are specified by their weights the volume of a liquid can be figured out by knowing its density.

The same principle can be used in measuring liquid volume stored in odd shaped containers.