Basically all the basic and derived SI units. More information here: http://en.wikipedia.org/wiki/SI_units#Units
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.
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.
base on what you measure to use the metric units.
How do you change metric units?
Yes, they are the metric unit for time. You ALWAYS use seconds for measuring time in science.
Oh yes, scientists only use metric SI units.
You use conversion factors.
I use metric units, such as meters, kilograms, and liters for measurements.
The metric system is a system of measurement based on the meter, kilogram, and second as fundamental units. It is used in science and measurement to provide a standardized and consistent way to quantify and compare physical quantities. Scientists use the metric system because it is easy to convert between units and promotes international collaboration and communication.
What metric unit would you use to measure a computer keyboard