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Metric Prefixes

Metric Prefixes. One larger thing equals many smaller things. Prefix Questions. ______ m = 1 km ______km = 1 m m illiliter or centiliter k ilogram or megagram m illimeter or kilometer A penny = 1 ______ dollar A dime = 1 ______ dollar A megabuck = ________ dollars

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Metric Prefixes

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  1. Metric Prefixes • One larger thing equals many smaller things

  2. Prefix Questions • ______ m = 1 km • ______km = 1 m • milliliter or centiliter • kilogram or megagram • millimeter or kilometer • A penny = 1 ______ dollar • A dime = 1 ______ dollar • A megabuck = ________ dollars • A kilopenny = __________ dollars (tricky) 1000 0.001 centi deci 1000000 10

  3. Prefix to Base Unit Questions • _________ • _________ • _________ • _________ • _________ kilometers grams Mass of a teaspoon of water liters Distance to beach micrograms Volume of balloon Megaseconds Time light travels from earth to nearest star Mass of an atom Episode 104

  4. Conversions • Dimensional Analysis or T-Factor • Convert 152 cm to m • Write in form of a question 152 cm = ? M • Conversion factor – a statement of fact expressed as a fraction equaling one • Allows you to convert from one unit to another unit of measurement • Fact: 1m = 100 cm, so or • Set units to cancel out • Add numerical values for units • Do the math! 1 m 100 cm 100 cm 1 m 152 cm 1 m = 1.52 m cm 100 Episode 104

  5. Another Conversions • Dimensional Analysis or T-Factor • Convert 62 kg to g • Write in form of a question 62 kg = ? g • Conversion factor • Fact: 1 kg = 1000 g, so or • Set units to cancel out • Add numerical values for units • Do the math! 1 kg 1000 g 1 kg 1000 g 1000 g 62 kg = 62000 g kg 1 Episode 104

  6. Divide or Multiply? • LET THE UNITS TELL YOU! • Convert 1700 µs to ds • Write in form of a question 1700 µs = ? ds • Conversion factor • Fact: 1 s = 1x106µs, so or • Fact: 1 s = 10 ds, so or • Set units to cancel out • Add numerical values for units • Do the math! 1x106µs 1 s 1 s 1x106µs 1 s 10 ds 10 ds 1 s 1 ds 1 s 1700 µs = 0.017 ds µs 1x106 10 s Episode 104

  7. Problem Set One 5.9 g • 59 dg to g • 9.8 cm to µm • 60 L to mL • 1.4 x 10-7 m to km • 4500 ks to Ms • How many yards are in 91.44 kM? • (2.54 cm = 1 inch) 98000 µm 60000 L 1.4 x 10-10 km 0.4500 Ms 100000 yds Episode 104

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