Secretive and wary, weasels are difficult to study in. nature, and many gaps remain in our knowledge of their. reproduction. Two of the species covered in this Wild-. life Note (the ermine and the long-tailed weasel) exhibit.
Extensive - Properties that do depend on the amount of matter present. Mass - A measurement of the amount of matter in a object (grams). Weight - A measurement of the gravitational force of attraction of the earth acting on an object. Volume - A measurement of the amount of space a substance occupies. Length.
relative density of a substance is defined as the ratio between the density of the substance to the density of water at 40c relative density is also known as specific gravity the relative density of a substance is a pure number without any unit it tells how many times a substance is heavier than water relative density r d of a substance can be calculated by dividing density of a substance with the density of water