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Mastering Measurement: Precision and Accuracy in Scientific Units

Understanding the fundamentals of measurement is crucial in science. Learn how to properly measure using instruments, significant figures, and SI Units like kilogram and centimeter. Explore the difference between precision and accuracy and grasp the concept of standard measurement systems.

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Mastering Measurement: Precision and Accuracy in Scientific Units

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Presentation Transcript

  1. Measurement The comparison of some aspect of an object or phenomenon with a standard unit.

  2. How do you properly measure something? • Use a measuring instrument to determine a number. • The last digit of your number is always estimated. • A proper significant figure included all digits as read from the instrument plus one doubtful digit.

  3. How do you properly measure something? • Every number is assigned a unit.

  4. International System of Units (SI Units) • Standard system of measurement used in science • Examples: • kilogram, centimeter, kilometer, liter, milligram, millimeter, milliliter, degrees Celsius

  5. Prefixes • Kilo – 1,000 • Centi – 1/100 • Milli – 1/1000

  6. Precision Vs Accuracy • Precision • How reproducible a measurement is.

  7. Precision vs. Accuracy • Accuracy • How correct a measurement is.

  8. Precision vs. Accuracy

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