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Metric System

Metric System. Used by scientist and most countries. Based on multiples of 10 Comes from the Greek word Metron – to measure. Prefixes 1/1000 – milli (mm) 1/100 – centi (cL) 1/10 – deci (dg) 10 – deka (dam, dkm) 100 – hecto (hL) 1000 – kilo (kg). Length.

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Metric System

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  1. Metric System • Used by scientist and most countries. • Based on multiples of 10 • Comes from the Greek word Metron – to measure. • Prefixes • 1/1000 – milli (mm) • 1/100 – centi (cL) • 1/10 – deci (dg) • 10 – deka (dam, dkm) • 100 – hecto (hL) • 1000 – kilo (kg)

  2. Length • The distance from one point to another. • The base unit is the meter. • Greeks created based on – • 1/10,000,000 of the distance from the north pole to the equator. • How long is your pencil (in metric)?

  3. Volume • The amount of space a substance uses. • The base unit is the liter. • 1 mL = 1/1000 of a liter • 1 cubic centimeter = 1 mL • 1000 cc = 1000 mL = 1 L • Volume displacement – use a graduated cylinder.

  4. Mass • The amount of matter or stuff of an object. • The base unit is the kilogram • Tool used is the triple beam balance scale. • Mass is not the same as weight. Weight is the result of gravity, so it can change. Your mass on the moon stays the same, but your weight is 1/6 of your weight on the earth. • 1 kg = 2.2 pounds on earth • Calculate your mass

  5. Density • The measurement of the amount of mass in a given volume. • Density = mass/volume • Labeled as grams/cubic centimeter or grams/milliliter • Water is 1 gram/mL • Water is the basic comparison, because anything greater will sink in the water.

  6. Temperature vs. Heat • Temperature is the average molecular movement of an object. • Heat is the total molecular movement of an object.

  7. Temperature • The metric system uses Celsius. • Water freezes at 0 degrees • Room temperature is 21 degrees • Body temperature is 37 degrees • Kelvin Scale – 0 K is absolute zero (no molecular movement.

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