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Using Numbers in Science AND Metric System

Using Numbers in Science AND Metric System. Parts of a Measurement. The value (numerical portion) The unit (describes what units) The name of substance being measured EX: 1 teaspoon salt 2 liters of pop. The Metric System &. Scientific Measurements made in metric units

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Using Numbers in Science AND Metric System

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  1. Using Numbers in ScienceANDMetric System

  2. Parts of a Measurement • The value (numerical portion) • The unit (describes what units) • The name of substance being measured EX: 1 teaspoon salt 2 liters of pop

  3. The Metric System & • Scientific Measurements made in metric units • Referred to as the International System or SI units • Based on the decimal system • Related by powers of 10 • Each type has a base unit • Use prefixes to refer to a unit larger or smaller than the base by some power of 10

  4. SI (International System) units Centigrade or Celsius = ⁰C This is the unit we will use in lab for temperatures!

  5. Prefixes for Metric Units <1 deci (d) = 1/10 = 0.1 centi (c) = 1/100 = 0.01 milli (m) = 1/1000 = 0.001 decimilli (dm) 10-4 centimilli (cm) 10-5 micro (µ)10-6 = 1/100000 = 0.000001

  6. Prefixes for Metric Units >1 kilo (k) = 1000 hecto (h) = 100 deka (da) = 10

  7. Metric Unit Conversions

  8. Millimeter Could be the diameter of a straight pin

  9. 1 inch = 2.54 centimeters Centimeter Which is about the length of a sugar cube A paperclip could be about 2.54cm long

  10. Meter

  11. Kilometer

  12. Mass

  13. Mass

  14. Volume

  15. Volume

  16. Class Activity 1 – Understanding Metric UnitsPart A - Matching Part B – select the best prefix

  17. Class Activity – Part CWhat are the correct abbreviations?

  18. Part D

  19. Review Questions 1. What does the prefix "milli" mean? • millionth • thousandth • hundredth • A liter is a little more than a _______ • pound • gallon • quart

  20. 3. What is a good height for a basketball player?   A. 6 meters   B. 2 meters   C. 6 millimeters 4. Which is the longer distance to run ? • 50 meters • 50 kilometers • 50 miles

  21. 5. Which value would be right for the mass of a   A. 17 mg   B. 17 g   C. 17 kg 6. Which value would be right for the mass of a   A. 460 mg   B. 460 g   C. 460 kg

  22. What units would best be used to record the length, volume or mass of these objects?

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