The adult massasauga, also known as the swamp rattler, is a stout-bodied snake with a broad head. It measures 18-40 inches (45-100 cm) in length. Average length is 27.5 inches (70 cm).assasauga rattlesnakes range from central New York and southern Ontario west to the prairies of Iowa and Missouri. The eastern massasauga is strongly associated with wetlands across most of its range. Wet prairie is the preferred habitat in the west, bogs and swamps in the east.
Zeptometer is a length measurement unit. A zeptometer (zm) is a derived metric measurement unit of length. The metric unit prefix zepto means one sextillionth, or one (1) with twenty (20) nulls in front of it, i.e. 0.000,000,000,000,000,000,001 or 1Ã10 -21. That makes one zeptometer equal to one sextillionth of a meter.
A hydrometer or areometer is an instrument that measures the specific gravity (relative density) of liquidsâthe ratio of the density of the liquid to the density of water. A hydrometer is usually made of glass, and consists of a cylindrical stem and a bulb weighted with mercury or lead shot to make it float upright. The liquid to test is poured into a tall container, often a graduated cylinder, and the hydrometer is gently lowered into the liquid until it floats freely. The point at which the surface of the liquid touches the stem of the hydrometer correlates to specific gravity.