There are several advantages. Some of them are:
1. They are internationally agreed as standard. Not like a gallon which can mean one amount in the US and another in the UK.
2. Orders of magnitude for the same measure are related by simple decimal conversions and only a handful of prefices are required (although there are a lot more). By way of contrast, the Imperial system uses:
and so on, and on and on. The decimal structure also makes it very simple to use scientific notation for small and large quantities.
3. It is used by most people in the world. The main recalcitrant countries are USA, Liberia and Myanmar. Even in the US, scientists normally use SI. When they don't they have disasters like the one that trashed NASA's Mars Climate Orbiter!
4. There are many simple relations from measures for one characteristic to another. For example, the SI unit of length is 1 metre. 100 square metres = 1 are, the unit for area. 1 cubic metre = 1000 litres, the unit for volume.
Yes, it is recommended because the SI-units are based on the metric system.
they aren't!
The standard for science the world over is the metric system, and most commonly the mks system of units. This stands for meter, kilogram, seconds. Different sub-fields may use slightly tweeked units like the cgs system which stands for centimeter, gram, seconds but these are still metric units.
It is a more logical system, where everything is divisible by 10. With other units, everything is arbitrary.
Metric units include millimeters, centimeters, decimeters, and meters.
Almost all scientists use metric units for scientific measurements.
Yes, it is recommended because the SI-units are based on the metric system.
Because the metric system uses units of 10's to measure which makes things simple.
Basically all the basic and derived SI units. More information here: http://en.wikipedia.org/wiki/SI_units#Units
They are used a lot in science. However, the metric units are also used in daily life, in most countries - with the notable exception of the United States.In some cases, non-metric (non-SI) units are also used; for example, it is customary to use degrees Celsius for temperature (instead of Kelvin); or to use time units other than seconds (such as minutes, days, years) for time.
How do you change metric units?
base on what you measure to use the metric units.
You use conversion factors.
I use metric units, such as meters, kilograms, and liters for measurements.
Oh yes, scientists only use metric SI units.
Metric units of measurement are more fun to say.
What metric unit would you use to measure a computer keyboard