2. Metric System Notes September 20 th, 2013 Notebook page: 21

3. Metrics 1. In science class we always use the METRIC system when making measurements. 2. Two reasons why scientists use the metric system and not the American system of measurements is because: a. The metric system is accepted and recognized all over the WORLD. b. The metric system is based on units of 10.

4. Metrics 3. The metric system is also called the SI, which means the INTERNATIONAL SYSTEM OF UNITS.

5. Length, Mass, & Volume (MGL)  Length is the distance between two points –measured in meters.  Mass is the amount of matter in an object –measured in grams.  Volume is the amount of space taken up by an object –measured in liters. Basic unit

6. Density, Time, & Temperature  Density is the mass per unit volume –measured in kilogram per cubic meter (kg/m 3 ).  Time –measured in seconds.  Temperature measured in kelvins. Basic unit VS.

7. The Tools  Length – Meter stick or ruler  Volume – Graduated cylinder  Mass – Balance or scale

8. The Tools  Denisty – Formula: mass/volume  Time– Clock or watch  Temperature – thermometer

9. Converting in the metric system.

10. Conversion 1 Kilometer 1 Hectometer 1 Dekameter 1 Meter 1 Decimeter 1 Centimeter 1 Millimeter  1,000 meters =  100 meters =  10 meters =  1 meter =  1/10 (.1) meter =  1/100 (.01) meter =  1/1,000 (.001) meter =

11. Use whiteboards to convert the following: 100 cm = ______m 40 m =______hm 2000 mm =______dm 5 hm =______m 10 m =______dkm 1 meter.4 hectometer 20 decimeters 500 meters 1 dekameter Kids Have Dropped Dead Converting Metrics (km) (hm)(dkm) (dm) (cm) (mm)