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Metric Units (SI Units)PowerPoint Presentation

Metric Units (SI Units)

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### Metric Units(SI Units)

Measurements

- Must have a number and a unit
(Ex) 13 vs. 13 cm

- The number tells how much you have
- The unit tells what you are measuring
(Ex) cm = length; g = mass; L = volume; J = energy;

°C = temperature

SI Units (≈metric units)(International System of Units)

- Notice the basic units have one letter.
- * All other units are derived units and have two letters or more.

Unit Conversion

- Conversion factors (CF)
1. always in fraction form

2. always equal to 1

(Ex)

3. More than 1 CF can be multiplied

4. Units are treated like variables

(Ex)

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