Measurement Notes

The Metric System The metric system is the measurement system used by all scientists Based on multiples of 10

Types of Measurement LENGTH AND WIDTH Unit: Meter (m) Tool: Ruler Meters, centimeters (cm), millimeters (mm) Tool: Ruler Area = length x width (cm2)

Types of Measurement VOLUME Unit: Liter (L) Tool: Graduated Cylinder Milliliters (mL) Tool: Graduated Cylinder Volume = length x width x height (cm3) Meniscus 

Types of Measurement MASS Unit: Gram (g) Tool: balance Kilogram (kg) or milligram (mg) Tool: balance Density = mass  volume

Types of Measurement TEMPERATURE Unit: Celsius (°C) Tool: Thermometer 0 °C = the freezing point of water 32 °F 100 °C = the boiling point of water 212 °F

Conversions (see pg. 943) K H D B D C M Length Mass Volume Temperature 1 centimeter (cm) = 10 millimeters (mm) 1 meter (m) = 100 centimeters (cm) 1 meter (m) = 1000 millimeters (mm) 1000 meters (m) = 1 kilometer 1 gram (g) = 1000 milligrams (mg) 1000 grams (g) = 1 kilogram (kg) Volume Temperature 1 liter (L) = 1000 milliliters (mL) 1 cm3 = 1 mL 0 °C = freezing 100 °C = boiling

Practice Problems #1 Convert 5 meters to centimeters 500 cm Convert 5000 meters to km 5 km Convert 1500 mL to L 1.5 L

Practice Problems #2 Find the area of a table that is 30 cm wide and 1.5 meters long Area = length x width Area = 30 cm x 150 cm = 4500 cm2 (OR .45 m2) Find the density of an object with a mass of 2.8 kg and a volume of 3.5 L Density = Mass  Volume Denstiy = 2.8 kg/3.5 L = .8 kg/L Convert 2 kg to grams 2000 g

THE END