The metric system is the standard system of measurement used by scientists. It uses units like meters, liters, and grams to measure length, volume, mass, weight, density, and temperature. Conversion between units uses dimensional analysis and conversion factors that equal 1. Common metric units include meters for length, liters and milliliters for volume, grams and kilograms for mass, Newtons for weight, and Celsius degrees for temperature.

1. The Metric System

4. thermometer Celsius temperature D=M/V density Weighing scale Newton weight Triple-beam balance Gram, kilogram, milligram mass Graduated cylinder, beaker Liter, mL, cubic centimeter volume Ruler, meter stick, yard stick meter, cm, km, light year length Tool Unit Measurement