What are the 3 basic units of measurement in the SI system?
What are the 3 basic units of measurement in the SI system?
SI Units
- Length – meter (m)
- Time – second (s)
- Amount of substance – mole (mole)
- Electric current – ampere (A)
- Temperature – kelvin (K)
- Luminous intensity – candela (cd)
- Mass – kilogram (kg)
What are the basic prefixes used in the metric system?
The metric system is based on joining one of a series of prefixes, including kilo-, hecto-, deka-, deci-, centi-, and milli-, with a base unit of measurement, such as meter, liter, or gram.
What does an SI prefix do in the metric system?
The SI prefixes or metric prefixes are an indicator that precedes a basic unit of measure to indicate a multiple or sub-multiple of the unit. Often within electronics, and many other areas, quantities can become very large.
How many SI prefixes are there?
twenty SI prefixes
Why are SI prefixes used?
SI prefixes are used to form decimal multiples and submultiples of SI units. They should be used to avoid very large or very small numeric values. The prefix attaches directly to the name of a unit, and a prefix symbol attaches directly to the symbol for a unit.
Which SI prefix is the largest?
Prefixes
Purpose | Prefix Name | Value |
---|---|---|
larger quantities or whole units | tera | Trillion |
giga | Billion | |
mega | Million | |
kilo | Thousand |
Is Mega bigger than kilo?
Kilo- means 1,000; a Kilobyte is one thousand bytes. Mega- means 1,000,000; a Megabyte is a million bytes. Giga- means 1, a Gigabyte is a billion bytes. Tera- means 1,000; a Terabyte is a trillion bytes.
What is 1000 PB called?
Exabyte
What is between DECA and Kilo?
Measures of Capacity
Thousand 1000 | Ten 10 | |
---|---|---|
Metric Unit | Kilo (x1000) | Deca (x10) |
Mass | Kilo- gram | Deca- gram |
Length | Kilo- metre | Deca- metre |
Capacity | Kilo- litre | Deca- litre |
What is the symbol for centimeter?
A centimetre (international spelling) or centimeter (American spelling) (SI symbol cm) is a unit of length in the metric system, equal to one hundredth of a metre, centi being the SI prefix for a factor of 1100.