The official base SI unit of time is the second (s). Since SI units are used as the standards of all respectable science, this is the unit of time most used by true scientists. Although other units of time are used, this is the most commonly used among all scientific fields. Particular fields might use other units more often depending on the particular content that scientists in that field concentrate on.
The metric unit most often used to describe weight is the Kilogram.
All scientists use the metric unit of measurements because it is the most accurate.
Kilogram.
Scientists use the symbol "u" to represent atomic mass unit.
The official base SI unit of time is the second (s). Since SI units are used as the standards of all respectable science, this is the unit of time most used by true scientists. Although other units of time are used, this is the most commonly used among all scientific fields. Particular fields might use other units more often depending on the particular content that scientists in that field concentrate on.
Oceanographers and scientists most often express salinity in units of parts per thousand (ppt). This unit is commonly used to measure the concentration of salts in seawater.
most scientists and engineers use the metric system to collect data and preform experiments.
The metric unit most often used to describe weight is the Kilogram.
Most scientist use the metric system
Scientists commonly use the metric system for measurements, with units like meters for length, grams for mass, and seconds for time. This system is preferred for its simplicity and ease of conversion between different units.
Not often because it is a tool to imagine astronomical distances, not a form of accurate measurement designed for equations and planning of a flight path. It is also too large for most missions.
The metric unit used most often to measure liquids is the liter (L). It is a unit of capacity and is commonly used in everyday life and in the scientific community.
Joules
grains
All scientists use the metric unit of measurements because it is the most accurate.
Kelvin. http://en.wikipedia.org/wiki/Kelvin