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Measurement

Measurement. SI Units. Scientists use the same international system for measurement called SI units Short for Systeme Internationale d’Unites (French) Helps scientists compare research from around the world Built on 7 metric base units. SI Units. The Big 5. Metric Prefixes.

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Measurement

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  1. Measurement

  2. SI Units • Scientists use the same international system for measurement called SI units • Short for SystemeInternationaled’Unites (French) • Helps scientists compare research from around the world • Built on 7 metric base units

  3. SI Units • The Big 5

  4. Metric Prefixes • Metric prefixes are made to make base units larger or smaller • REMEMBER: King Henry Died By Drinking Chocolate Milk

  5. Temperature Conversions • Temperature Scales • Fahrenheit (°F) • Daily temp… not scientific • Celsius (°C) • Freezing point of water = 0°C • Boiling point of water = 100°C • Kelvin (K) • SI unit of Temperature • Absolute Zero • 0 K • When all motion stops • We have gotten to a millionth of a degree but never 0 K

  6. Temperature Conversions • 1 °C = 1 K • Changing FROM °C  K °C + 273 = K • Changing FROM Kelvin  °C K-273 = °C

  7. Convert the Following… 298 • 25 ° C = ______ K • 123 ° C = _______ K • 853 K = _______ ° C • 87.89 K = _______ °C • 0 °C = _____ K • 0 K = ______ °C 396 580 -185.11 273 -273

  8. Density • Density – ratio of mass of an object to its volume • Density = Mass Volume • The density of water = 1.0 g/mL • If density is > 1, object will sink • If density is < 1, object will float Mass Density Volume Common Units: Mass: g, kg, lbs Volume: L, mL, gal., qt., cm3 Density: g/mL; lbs/gal; g/cm3

  9. Density Column

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