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The Metric System: A Universal Standard for Measurement

The metric system, invented in 1790 by French scientists, was created to unify the diverse measurement systems that caused confusion. This system, based on the number 10, is now the standard measurement system used by most countries worldwide, facilitating consistent communication among scientists. The International System of Units (SI) standardizes various measurements, including length, volume, mass, and temperature. Units such as meters, centimeters, and millimeters form the foundation of length measurement in this system, allowing for accurate experiments and data comparison.

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The Metric System: A Universal Standard for Measurement

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  1. Measurement-A Common Language Length

  2. A Standard Measurement System The Metric System

  3. When 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. Who invented the metric system? • The metric system was invented by a group of French scientists

  5. Metric System • A system of measurement used by the majority of countries on Earth based on the number 10

  6. A Standard Measurement System The International System of Units (SI)

  7. Scientists all over the world use the International System of Units to measure: • Length • Volume • Mass • Density • Temperature • Time

  8. Figure 1: Calculating - How much larger is a kilo- than a deka-? • 100 times

  9.  Reading Checkpoint (page 45): SI units are based on multiples of what number? • SI units are based on multiples of 10 • Add a zero • Subtract a zero

  10. Key Concept: Why do scientists use a standard measurement system? • Using SI as the standard system of measurement allows scientists to compare data and communicate with other scientists all over the world • Using SI measurement also allows experiments to be repeated and most importantly achieve a desired result

  11. Length

  12. What is length? • Length is the distance from one point to another

  13. Length Units of Length

  14. The basic unit of length in the SI system is the … • The basic unit of length in the SI system is the meter

  15. The two units that measure the length of smaller objects are, … • millimeter • centimeter

  16. Complete the Table Below

  17. Complete the Table Below

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  25. Length Measuring Length

  26. The longer lines on the metric ruler are called… • centimeters

  27. The shorter lines on the metric ruler are called… • millimeters

  28.  Reading Checkpoint (page 48)One centimeter is divided into how many millimeters? • 10 millimeters (mm)

  29. Figure 2: Calculating: Measure the turtle in figure 2 from the rear of its shell to the tip of its nose. Record its length in both centimeters and millimeters. • 10.5 cm • 105 mm

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