2. A S TANDARD M EASUREMENT S YSTEM The Metric System

3. W HEN AND WHY WAS THE METRIC SYSTEM INVENTED ? The metric system was invented in 1790 The metric system was invented because countries were using many different systems of measurement causing confusion and lack of consistency

4. W HO INVENTED THE METRIC SYSTEM ? The metric system was invented by a group of French scientists

5. M ETRIC S YSTEM A system of measurement used by the majority of countries on Earth based on the number 10

6. K EY C ONCEPT : W HY DO SCIENTISTS USE A STANDARD MEASUREMENT SYSTEM ? Using SI as the standard system of measurement allows scientists to compare data and communicate with each other about their results Using SI measurement also allows experiments to be repeated and most importantly achieve a desired result

7. W HAT IS LENGTH ? Length is the distance from one point to another

8. T HE BASIC UNIT OF LENGTH IN THE SI SYSTEM IS THE … The basic unit of length in the SI system is the meter

9. T HE TWO UNITS THAT MEASURE THE LENGTH OF SMALLER OBJECTS ARE, … millimeter centimeter

10. C OMPLETE THE T ABLE B ELOW PrefixMeaningUnit of Length milli one-hundredth meter one-thousand

11. C OMPLETE THE T ABLE B ELOW PrefixMeaningUnit of Length milliOne-thousandth one-hundredth meter one-thousand

12. C OMPLETE THE T ABLE B ELOW PrefixMeaningUnit of Length milliOne-thousandthmillimeter one-hundredth meter one-thousand

13. C OMPLETE THE T ABLE B ELOW PrefixMeaningUnit of Length milliOne-thousandthmillimeter centione-hundredth meter one-thousand

14. C OMPLETE THE T ABLE B ELOW PrefixMeaningUnit of Length milliOne-thousandthmillimeter centione-hundredthcentimeter meter one-thousand

15. C OMPLETE THE T ABLE B ELOW PrefixMeaningUnit of Length milliOne-thousandthmillimeter centione-hundredthcentimeter nonemeter one-thousand

16. C OMPLETE THE T ABLE B ELOW PrefixMeaningUnit of Length milliOne-thousandthmillimeter centione-hundredthcentimeter noneonemeter one-thousand

17. C OMPLETE THE T ABLE B ELOW PrefixMeaningUnit of Length milliOne-thousandthmillimeter centione-hundredthcentimeter noneonemeter kiloone-thousand

18. C OMPLETE THE T ABLE B ELOW PrefixMeaningUnit of Length milliOne-thousandthmillimeter centione-hundredthcentimeter noneonemeter kiloone-thousandkilometer

19. T HE LONGER LINES ON THE METRIC RULER ARE CALLED … centimeters

20. T HE SHORTER LINES ON THE METRIC RULER ARE CALLED … millimeters

21. R EADING C HECKPOINT O NE CENTIMETER IS DIVIDED INTO HOW MANY MILLIMETERS ? 10 millimeters (mm)

22. F IGURE 2: C ALCULATING : M EASURE THE TURTLE IN FIGURE 2 FROM THE REAR OF ITS SHELL TO THE FRONT OF ITS SHELL. R ECORD ITS LENGTH IN BOTH CENTIMETERS AND MILLIMETERS. H OW WOULD IT CHANGE IF IT WHERE TIP OF NOSE ? 8.8 cm 88 mm