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Understanding Measurement in Scientific Notation

Learn about scientific notation, units used by scientists, and the SI System for measurements. Practice measuring and explore different systems of measurement. Includes examples, conversion exercises, and key concepts in a fun activity.

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Understanding Measurement in Scientific Notation

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  1. Chapter 1Lesson 3 “Measurement” Key Concepts… What is scientific notation??? What units do scientists use for their measurements??? What is the SI System and how do we use it???

  2. Activity (5-7 min) Use a pen/pencil and measure the length of the table you are sitting at. Record your measurement Repeat using a different pen/pencil Record your measurement Think…Why are your measurements different from each other???

  3. I. Using Scientific Notation A. A way of expressing a number as a value and a power of 10. 1. Why use it??? -easy to use large/small numbers 2. Ex. 400,000,000  3. Ex. 35,300  4. Ex. 0.0000456  5. Ex. 4.58 x 10-3  4.0 x 108 3.53 x 104 4.56 x 10-5 0.00458

  4. II. Standards of Measurements A. Standard – an exact quantity that people agree on. 1. Ex: a = 12 inches 2. a mile = 5280 feet

  5. III. Different Systems A. English System – feet, gallons, cups, inches… 1. U.S. only country to use it. B. SI System 1. 1960 by the French 2. Used worldwide 3. Based on powers of 10

  6. Common Prefixes (pg. 17) Giga  109 1,000,000,000 Mega  106 1,000,000 Kilo  103 1,000 Hecto  102 100 Deka  101 10 Base  100 1 Deci  10-1 0.1 Centi  10-2 0.01 Milli  10-3 0.001 Micro  10-6 0.000001 Nano  10-9 0.000000001

  7. Examples 1. Convert 1.0 m to dm?  10 decimeters 2. A road is 1000 m in length. What is this in km?  1 kilometer 3. A small new planet is found 3 light years away from Earth. If the diameter of this planet is 23,500 meters, how many kilometers is its diameter?  23.5 kilometers

  8. More Conversions… 1. 2.3 mm  cm 2. 4.05 km  meters 3. 5.7 micrometer  mm 4. 10.01 Mm  km 5. 0.0003 hm  mm 6. 1,234,567 micrometers  Mm 7. 1.34 x 103 deciliters  liters

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