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Standards of Measurement

Standards of Measurement. Newspaper clipping - can you find the measurements in it?. A standard is an exact quantity that people agree to use to compare measurements.

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Standards of Measurement

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  1. Standards of Measurement Newspaper clipping - can you find the measurements in it?

  2. A standard is an exact quantity that people agree to use to compare measurements. Scenario:  You and your friend need to move a desk  but you're not sure if it will fit in your trunk. You don't have a ruler or other tool on you.  How can you quickly determine if the desk will fit?

  3. Historically, body parts were used as measuring devices The height of a horse was measured in hands Foot comes from the average length of a person's foot. A pace is the length of a person's step. *What is the main problem with this kind of system?

  4.  Match the unit with the item... a.  pound b.  miles c.  foot d.  yard e.  gallon A  _______________ of milk. A  __________ of material. A  __________ of potatoes. A  __________ of rope. You are driving  60 _______ per hour.  The units above use an ENGLISH system of measurement - used mainly in England and U.S.A. Most other countries use the METRIC system

  5. a.  gramb.  literc.  meter You are probably also familiar with some of the metric system units.  Match these... A  2 ______ bottle of soda. A  ________ of sugar. A  ________ stick.

  6. International System of Units - all countries agreed upon system used by all scientists. Abbreviated to:  SI standards (units)Length = meter (m), centimeter (cm), or millimeter (mm)Mass = kilogram  (kg)  or  gram (g)Volume = liter (l) or milliliter (ml)

  7. Be warned.You will be doing math in this class.

  8. Metric system units are base 10, so it is easy to convert Ex.   There are 10 millimeters in 1 centimeter          100 centimeters in 1 meter A mm is about as thick as a dime.   Notice there are about 10 dimes between the 6 and the 7 on this photo. The large number represent centimeters.

  9. Don't worry about converting inches to centimeters - just measure in centimeters to start with.Use your ruler to calculate ..1. Width of your desk  _______ cm2. Width of your desk  ______ mm3. Length of your index finger _____ cm4. Length of your index finger ______mm

  10. Length Measurements Millimeter = small objects, like a quarter Centimeter = small objects, your foot or even your height Meter = larger distances, the size of a room Kilometer = much larger distances, St. Louis to Springfield What are the english units for the lengths above?

  11. Volume measures the amount of something, usually a liquid. SI units for volume Liter Milliliter Beakers and Graduated cylinders used to measure volume

  12. How to read a graduated cylinder

  13. CC = cubic centimeter, which is the same as a mlUsed in medicine

  14. Mass: the amount of matter in an object       Measured in grams and kilograms           Weight measures mass + gravity

  15. How to read a balance...

  16. Units of Weight Grams for small objects or foods Kilograms for larger objects like people          1000 grams = 1 kilogram Some scales show both pounds and kilograms.  How much does this person weight? 1lb = .45 kilograms

  17. Quiz Time  ---   STANDARDS

  18. 1.  What is the metric unit you would use to measure  a football field? ____________  (not feet or yards) 2.  What unit would you use to measure the distance between St. Louis and Chicago? _____ 3.  ____________is the amount of matter in an object 4.  ___________ is a measure of the amount of something (like a liquid) 5.  If you were to weigh yourself using the metric system, what unit would you use? __________

  19. 6.  What does SI stand for?  _______________________________ 7.   Name an equipment that would be used to measure volume? ___________________ 8.   How many millimeters are in a centimeter? ______ 9.   How many grams are in a kilogram? ______ 10.  What does  "CC" stand for? __________________

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