Metric Measurements The SI system The SI system

Metric Measurements The SI system

The SI system • Known as the International System of Units – So……. . why not IS? • Well, it turns out it REALLY is the abbreviation for Systéme International d’Unités – Those silly French people.

The SI system • So much easier since it is based on base 10. – Wrenches

The SI system • Common Prefixes – kilo – hecto – deka – deci – centi – milli k h da d c m 1000 10 0. 1(one tenth) 0. 01(one hundredth) 0. 001(one thousandth)

The SI system • Standard unit of measure for length is the meter (m) – 1 meter = 3. 280 839 895 feet – The distance for the Earth to the Moon is 384, 403 km or…. . 384, 403, 000 m – The average male American men’s height is 177 cm, which is about 5 foot - 10 inches tall. – Women’s average height is 163 to 164 cm

The SI system • Standard unit of measure for mass is the gram (g). – 1 gram = 0. 035 273 962 ounce – The average 40 -49 year old male has a mass of about 82. 6 kg or 182 pounds. Women - 67. 7 kg – 1 Sweet and Salty granola bar by Nature Valley has a mass of 35 g or 1. 2 ounces. • And 170 calories – and 9 g of fat

The SI system • Standard unit of measure for volume is the liter (L). – 1 liter = 33. 814 022 702 ounce [US, liquid] – One 12 ounce can of pop = 0. 354 882 355 liter • or 354. 882 354 75 milliliter.

The SI system • Standard unit of measure for temperature is the degree Celsius (C). – 1 degree Celsius = 33. 8 degree Fahrenheit – 2 degree Celsius = 35. 6 degree Fahrenheit – 3 degree Celsius = 37. 4 degree Fahrenheit – But wait…. . .

The SI system • Converting F to Celsius – Co = 5/9(Fo - 32) • Converting C to F • Fo = (9/5 Co) + 32 • Average human body temperature is 37°C • or 98. 6 F