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Metric Conversions!

Unit 2-2. Metric Conversions!. Systems of Measurement. The English system is used in the United States. The units used are gallons, pounds, and feet. There are no standards in nature for these units. The rest of the world uses another measurement system: the metric system.

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Metric Conversions!

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  1. Unit 2-2 Metric Conversions!

  2. Systems of Measurement • TheEnglish systemis used in the United States. • The units used are gallons, pounds, and feet. • There are no standards in nature for these units. • The rest of the world uses another measurement system: the metric system.

  3. The Metric System • Themetric systemis based on multiples of 10 (such as 100 and 1,000). • Scientists all over the world use metric units. • This allows them to share scientific knowledge even when they speak different languages. • There is an International System of Units called theSI Units: meter, liter, and gram.

  4. SI Units: Length • The basic unit of length in science is called the meter (m). A metric ruler is a ruler that scientists use to measure length.

  5. Metric Ruler • Used to measure length (meters) Metric Units = GOOD! English = BAD

  6. SI Units: Volume • The basic unit of volume to measure gasses and liquids is called the liter (l). A graduated cylinderis a tool scientists use to measure liquid volume.

  7. SI Units: Mass • The basic unit of mass in science is called the kilogram (kg). A triple beam balance is a tool scientists use to measure mass.

  8. SI Units Standard International Units (SI) are units that are used for consistency all around the world.

  9. Prefixes help to make measurement of lengths, volumes, and mass more accurate by making the root measurements (m, l, g) bigger or smaller. .1 = 1/10 .01 = 1/100 .001 = 1/1000

  10. Let’s do an example! 

  11. Using Steps

  12. Understanding Unit Conversions King Henry Doesn’t (usually) Drink Chocolate Milk K H D unit d c m Kilo Hecto Deka deci centi milli 1000100100.1 0.01 0.001 grams (g) liters (l) meters (m) • The difference between each unit is one decimal place, or 10. • As you go from larger units to smaller units, move the decimal place to the right. • As you go from smaller units to larger units, move the decimal place to the left.

  13. Using a CHART: Used to measure bigger things!! Used to measure smaller things!! - Moving to the right is like multiplying. - Moving to the left is like dividing. - Your number will get SMALLER (become a decimal) -Your number will get BIGGER! You will move your decimal point in the same direction that you moved on the chart!

  14. How we do it….. Convert: 23.45 mm to ______________ cm

  15. Now Try These…. 1) 1000 mg = _______ g 2) 1 L = _______ mL 3) 160 cm = _______ mm 4) 14 km = _______ m 5) 109 g = _______ hg 6) 250 m = _______ km 7) 6 L = _______ mL

  16. Now Try These…. 1 1) 1000 mg = _______ g 1,000 2) 1 L = _______ mL 1,600 3) 160 cm = _______ mm 14,000 4) 14 km = _______ m 1.09 5) 109 g = _______ hg 0.250 6) 250 m = _______ km 6,000 7) 6 L = _______ mL

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