LITER
Additional answer
Also cubic centimetres, gallons, cubic meters, cubic miles, cubic kilomaters. Depends on the size of the water. You wouldn't measure the amount of water in the sea in litres but probably in cubic miles.
Hydrometer measure the density of liquids.
The unit for density is kg m-3.
A hydrometer can be used to find the specific gravity (relative density) of a liquid by determining how much water it will displace. Various calibrations are used for different kinds of liquids.
density -------- Graduated cyllinders are used to measure volumes of liquids, powders or fine granules.
"liter"
An areometer is a device used to measure the specific gravity of liquids or density of solids.
1ml=1/1000 litres 1litre = 1000ml
It is not used for this.A hydrometer is an instrument used to measure the specific gravity (or relative density) of liquids, NOT rock.To measure the density of a rock you weigh a piece of it in air, then measure the volume of water it displaces in a measuring jug.Density = mass/volume.
The derived SI unit for density is Kilogram per cubic metre.
there are many unit which measure volume .SI units that measure volume is cubic meter .
That's a unit of density.
To explain first: density is mass (m) per unit volume (V)-how heavy something is compared to its size. Water, for example, has a density of 1g/cm3.