Insight

• Relative density does not have any units of measurements.
  
  

Specific Gravity

• Relative density is also referred to as specific gravity.
  
  

Use

• Geologists and mineralogists use relative density to predict a rock's mineral content.
  
  

Measurement

• The relative density of solids and liquids are usually measured against water at four degree Celsius. The relative density of the gases is measured against hydrogen.
  
  

Fact

• Relative density is equivalent to the density of the substance under consideration divided by water's density.