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B11L01

# B11L01 - ACTIVITY 1 Measurements Metrics A Metric Units The...

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Rev: F06- Heyer 1 - 1 ACTIVITY 1: Measurements & Metrics A. Metric Units The International System of Measurement (SI, Le Systeme International d'Unites), commonly called the metric system is used by scientists worldwide and has been adopted as the official system of measurement by most countries. Unlike our traditional system of measurement (inch, foot, yard, mile); the metric system is based on standard units that can be easily converted by simply multiplying or dividing by ten. The standard metric unit for length is the meter. Gram is the standard unit of mass and liter the standard unit of volume. Scientists measure temperature in degrees Celsius (or Kelvin). Table 1. Standard units of the metric system Measurement Standard Unit Example Length Meter (m) Height of a typical door handle (1m = approximately 39 inches) Mass Gram (g) Mass of one dollar bill (1 g = 0.035 oz) Volume Liter (l) Volume of large fast food soda (1 l = approximately 1qt) Temperature Celsius ( o C) Water freezes at 0 o C and boils at 100 o C Measurements are further expressed using a superunit prefix or a subunit prefix.

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