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Metric Measurements

Metric Measurements. Measuring Stuff. In this class we will be using the Metric System to measure The metric system is a system of measurement used by scientists all over the world It is simpler and easier to use and understand than traditional measurement systems

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Metric Measurements

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  1. Metric Measurements

  2. Measuring Stuff • In this class we will be using the Metric System to measure • The metric system is a system of measurement used by scientists all over the world • It is simpler and easier to use and understand than traditional measurement systems • In the U.S., we use the English or Standard Measurement System

  3. Metric Units • There are different metric units depending on what we want to measure (base units) • Meter (m) – length • Liter (L) – volume • Gram (g) – mass • Celcius (C ) – Temperature • These are called base units

  4. English vs. Metric • Which is longer? • 1 mile or 1 kilometer • 1 yard or 1 meter • 1 inch or 1 centimeter

  5. Changing Values • When you add a prefix to a base unit, you change its value: • Kilo- = 1,000 • Hecta- = 100 • Deca- = 10 • Deci- = .1 (1/10) • Centi- = .01 (1/100) • Milli- = .001 (1/1000)

  6. Length/Distance • The basic unit of length in the metric system is the meter and is abbreviated by a lowercase (m) • Metric Units • 1 kilometer (km) = 1,000 meters • 1 meter (m) = 100 centimeters • 1 meter (m) = 1000 millimeters (mm)

  7. Measuring Length • To measure length, we use a ruler: • How many millimeters are in 1 centimeter? • What is the length of the line in cm? • What is the length of the line in mm?

  8. Mass • Mass refers to the amount of matter in an object • The base unit of mass in the metric system is the kilogram and is represented by kg • Metric units: • 1 kilogram (km) = 1,000 Grams (g) • 1 gram (g) = 1000 milligrams (mg)

  9. English vs. Metric Units • Which is larger? • 1 pound or 100 grams • 1 kilogram or 1 pound • 1 ounce or 1000 milligrams 1 pound = 453.6 grams 1 ounce of gold = 28, 349.5 mg 100 kg = 220 lbs

  10. Measuring Mass • We will use a triple-beam balance to find the mass of various objects • The objects are placed on the scale and then you move the weights on the beams until the lines on the right-side of the scale match • Once the scale is balanced, add up the amounts on each beam to find the total mass • What is the mass of the object measured in the picture?

  11. English vs. Metric Units • Which is larger? • 1 liter or 1 gallon • 1 liter or 1 quart • 1 milliliter or 1 fluid ounce 1 quart = 0.946 liters

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