1. Measurement 1.Why do scientists use the Metric System?
2. What are the basic units of the Metric System?
3. What are the prefixes used?
4. How do we measure area, volume, weight and density?

2. 1.Why do scientists use the Metric System?
The whole world uses it
The Metric system is easier
SI-International System

3. 2. What are the basic units of the Metric System?
Vocabulary Words
Mass - the amount of matter in an object
Mass is always same (moon, Earth, Jupiter)
Weight- the measure of the amount of matter in an object’s mass and the way gravity pulls on it.
Weight changes (Moon –lighter; Jupiter-heavier)
Length-meter (m)
Includes Distance and height
Mass-grams (g)
Temperature- Celsius(°C)
Liquid Volume -liter (L)
Density- 𝑔𝑟𝑎𝑚𝑠 𝑐𝑚 3
Time- second (s)

4. SI Units
The worldwide scientific community uses an adaptation of the metric system called Systeme International d’Unites or SI.
The SI system of measurement uses seven base quantities.
Other units, called derived units, are created by combining the base units in various ways.
Mathematics and Physics
Copyright © McGraw-Hill Education

5. 3. What are the prefixes used?
SI Units
Prefixes are used to change SI base units to powers of 10.
Mathematics and Physics
Copyright © McGraw-Hill Education

6. 4. How do we measure area, volume, weight and density?
How do you convert from one unit to the other?

7. Metric conversion

8. Metric conversion

9. Metric conversion

10. Metric conversion

11. Length Using the upper measuring tool: Using the lower measuring tool:
The length is between cm and 9.60 cm.
The length is between cm and 10 cm.
The measurement would be estimated to the nearest hundredth of a centimeter.
The measurement would be estimated to the nearest tenth of a centimeter.

12. 1. Metric ruler
a. ________ b. ________ c. ________ d. ________ e. ________ 

14. Finding volume using length

17. Finish Notes (be sure you can answer)
1.Why do scientists use the Metric System?
2. What are the basic units of the Metric System?
3. What are the prefixes used?
4. How do we measure area, volume, weight and density?