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Metric System

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KilometerHectometer DekameterMeterDecimeterCentimeter Millimeter

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Kilo Hecto Deca Meter/Liter/Gram Deci Centi Milli

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1 meter = 10 decimeters = 100 centimeters = 1000 millimeters

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The three prefixes that we will use the most are: Kilo, which means X 1000 Centi, which means X.01 Milli, which means X.001 kilohectodeca Base Units meter gram liter decicentimilli

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The metric system is based on a base unit that corresponds to a certain kind of measurement Length = meter Volume = liter Weight (Mass) = gram Prefixes plus base units make up the metric system Example: Centi + liter = Centiliter = 1/100 of a liter Kilo + liter = Kiloliter = 1000 liters

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Metric Length The basic unit of length in the metric system in the meter and is represented by a lowercase m. Metric Units 1 Kilometer (km) = 1000 meters 1 Meter = 100 Centimeters (cm) 1 Meter = 1000 Millimeters (mm) Which is larger? A. 1 meter or 105 centimeters B. 4 kilometers or 4400 meters C. 12 centimeters or 102 millimeters D. 1200 millimeters or 1 meter

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Measuring Length How many millimeters are in 1 centimeter? What is the length of the line in centimeters? _______cm What is the length of the line in millimeters? _______mm What is the length of the line to the nearest centimeter? ________cm HINT: Round to the nearest centimeter – no decimals. 1 centimeter = 10 millimeters

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Metric Mass Mass refers to the amount of matter in an object. The base unit of mass in the metric system in the kilogram and is represented by kg. Standard: 1 kilogram is equal to the mass of the International Prototype Kilogram (IPK), a platinum- iridium cylinder kept by the BIPM at Sèvres, France. Metric Units 1 Kilogram (km) = 1000 Grams (g) 1 Gram (g) = 1000 Milligrams (mg) Which is larger? A. 1 kilogram or 1500 grams B. 1200 milligrams or 1 gram C. 12 milligrams or 12 kilograms D. 4 kilograms or 4500 grams Kilogram Prototype

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Metric Volume Volume is the amount of space an object takes up. The base unit of volume in the metric system in the liter and is represented by L or l. 1 liter (L) = 1000 milliliters (mL) The metric system relates liquid and solid volume. One cubic centimeter equals 1 milliliter. Which is larger? A. 1 liter or 1500 milliliters B. 200 milliliters or 1.2 liters C. 12 cm 3 or 1.2 milliliters*

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Measuring Solid Volume 10 cm 9 cm 8 cm We can measure the volume of regular object using the formula: length x width x height. _____ X _____ X _____ = _____ We can measure the volume of irregular object using water displacement. Amount of H 2 O with object = ______ About of H 2 O without object = ______ Difference = Volume = ______

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Measuring Volume We will be using graduated cylinders to find the volume of liquids and other objects. Read the measurement based on the bottom of the meniscus or curve. When using a real cylinder, make sure you are eye-level with the level of the water. What is the volume of water in the cylinder? _____mL What causes the meniscus? A concave meniscus occurs when the molecules of the liquid attract those of the container. The glass attracts the water on the sides.

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Measuring Liquid Volume Images created at http://www.standards.dfes.gov.uk/primaryframework/downloads/SWF/measuring_cylinder.swf What is the volume of water in each cylinder? Pay attention to the units on the scale for each cylinder.

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