Metrics Basics
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This document provides an overview of various branches of science and the metric system. It discusses the main branches of physical science and life science. It then focuses on explaining the metric system, including the base units for length, volume, and mass. It provides examples of converting between metric units using multiplication or moving the decimal place based on prefixes that are powers of ten.
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Metrics Basics
- 1. Welcome to Physical Science
- 6. English units Metric units 12 inches to a foot 3 feet to a yard 1760 yards in a mile 2 cups in a pint 4 quarts in a gallon 16 ounces in a pound 2000 pounds in a ton 100 cm = 1 meter 1000 m = 1 kilometer 100 cL = 1 Liter 1000 L = 1 kiloliter 100 cg = 1 gram 1000 g = 1 kilogram
- 23. Common English to Metric 1 liter = 1.057 quarts 1.057 qt/L or 1 L/1.057 qt or 0.946 L/qt 1 kilogram = 2.2 pounds 2.2 lb/kg or 1 kg/2.2 lb or 0.454 kg/lb 1 meter = 1.094 yards 1.094 yd/m or 1m/1.094 yd or 0.917m/yd 1 inch = 2.54 cm 2.54 cm/inch or 1 in/2.54 cm Conversion Factors
Editor's Notes
- English units are the historical units of measurement in medieval England which evolved as a combination of the Anglo-Saxon and Roman systems of units. They were redefined in England in 1824 by a Weights and Measures Act, which retained many but not all of the unit names with slightly different values, and again in the 1970s by the International System of Units as a subset of the metric system. In modern UK usage, the term is considered ambiguous, as it could refer either to the imperial system used in the UK, or to the US customary system of unit. The common term used in the UK for the non-metric system is imperial units or imperial measurements , since they were used as a standard throughout the British Empire and the Commonwealth. Within the United States, the same term is commonly used to refer to the United States Customary System[1], which retains some unit names but with different values, as well as to the imperial units.
- Various standards have applied to English units at different times, in different places, and for different applications. Prior to the Battle of Hastings in 1066 the Anglo-Saxon system of measurement had been based on the units of the barleycorn and the gyrd (rod), inherited from tribes from Germany . After the Norman conquest , Roman units were reintroduced. The resultant system of English units was a combination of the Anglo-Saxon and Roman systems. Barleycorn Basic Anglo-Saxon unit, the length of a corn of barley . The unit survived after 1066 , as the base unit from which the inch was nominally defined. 3 barleycorns comprising 1 inch was the legal definition of the inch in many medieval laws, both of England and Wales, from the 10th century Laws of Hywel Dda to the 1324 definition of the inch enacted by Edward II . Note the relation to the grain unit of weight . This archaic measure is still the basis for current UK and U.S. shoe sizes , with the largest shoe size taken as thirteen inches (a size 13) and then counting backwards in barleycorn units, [4] although the original derivation was: less than 13 barleycorns: infants with no shoes; 13 to 26 barleycorns: children's sizes 1 to 12; 26 to 39 barleycorns: men's sizes 1 to 13.
- abbreviated SI from French : Système international d'unités [
- So if you needed to measure length you would choose meter as your base unit Length of a tree branch 1.5 meters Length of a room 5 meters Length of a ball of twine stretched out 25 meters