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