Living Environment Translated Arabic 2014 | Page 6

11.SI Unit of measurement- International Units ; also called the Metric
System of Measurement
a. Basic Units of Measurement
1. Meter- measure of length ( distance)
2. Liter- measure of volume
3. Gram- measure of mass ( weight)
4. Second- measure of time
b. Prefixes:
1. Kilo- 1000 times larger than the basic unit
2. Deci- 1/10 of the basic unit
3. Centi- 1/100 of the basic unit
4. Milli- 1/1000 of the basic unit