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Understanding SI Units and Scientific Notation: A Comprehensive Overview

Explore the significance of SI units and scientific notation in measurements, with easy-to-use examples and conversions. Learn how to express large and small numbers efficiently. Includes base units, derived units, and practical examples.

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Understanding SI Units and Scientific Notation: A Comprehensive Overview

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  1. SI Units & Scientific Notation

  2. SI Units • Why use them? • Common system • Easy to use -based on factors of 10

  3. What are they? Time Length/distance Mass Temperature Electric current Second (s) Meter (m) Kilogram (kg) Kelvin (K) Ampere (A) SI Base Units Derived Units: Volume 1 cm3 = 1 mL

  4. SI Conversion • milli- m 10-3 • centi- c 10-2 • kilo- k 103 • mega- M 106 • giga- G 109 • Examples

  5. Scientific Notation • Why use it? • Easier to write really small or large numbers • Format • ? x 10n • ? = number between 1 and 10 • n = positive exponent (for large numbers) • n = negative exponent (for small numbers)

  6. Scientific Notation • Examples • Earth’s Radius • Lifetime of pion • Earth to the Moon • Diameter of an atom

  7. Homework • Page 17 #1-4,6,7 • Page 23 #1-2

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