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The United States should use the Metric system The metric system is so much simpler to use The metric system is an improvement over the English system in three major ways: • One unit of measurement for each physical quantity • Used by most other countries • Decimal system makes for easy conversion One unit of measurement for each physical quantity Length, area, volume, mass, force, pressure, energy, power and temperature metric system 1.Length: meter 2.Area: square meter 3.Volume: cubic meter (liter) 4.Mass: gram (metric ton) 5.Force: newton 6.Pressure: pascal 7.Energy: joule 8.Power: watt 9.Temperature: kelvin (degrees Celsius) combined with none or one of the following prefixes: • micro, milli, centi, deci, deca, hecto, kilo, mega VS English Imperial system 1. Length: inch, foot, yard, mile, fathom, rod, furlong, league, mil, pole, perch, hand, link, chain 2. Area: square inch, square foot, square yard, acre, square mile, township, square fathom, square rod, square furlong, square league, square mil, square pole, square perch, square hand, square link, square chain 3. Volume: gallon, liquid quart, dry quart, liquid pint, dry pint, fluid ounce, teaspoon, tablespoon, minim, fluid dram, gill, peck, bushel, cubic inch, cubic foot, cubic yard, cubic fathom, cubic rod, cubic furlong, cubic mile, cubic league, cubic mil, cubic pole, cubic perch, cubic hand, cubic link, cubic chain 4. Mass: pound, apoth. pound, ounce, apoth. ounce, dram, apoth. dram, grain, spoth. scruple, pennyweight, short hundredweight, long hundredweight, short ton, long ton 5. Force: pound, ton 6. Pressure: pounds per square inch, pounds per square foot, pounds per square yard, pounds per acre, pounds per square mile, pounds per township, pounds per square fathom, pounds per square rod, pounds per square furlong, pounds per square league, pounds per square mil, pounds per square pole, pounds per square perch, pounds per square hand, pounds per square link, pounds per square chain, tons per square inch, tons per square foot, tons per square yard, tons per acre, tons per square mile, tons per township, tons per square fathom, tons per square rod, tons per square furlong, tons per square league, tons per square mil, tons per square pole, tons per square perch, tons per square hand, tons per square link, tons per square chain 7. Energy: calorie, inch-pound, foot-pound, yard-pound, mile-pound, fathom-pound, rod-pound, furlong-pound, league-pound, mil-pound, pole-pound, perch-pound, hand-pound, link-pound, chainpound, inch-ton, foot-ton, yard-ton, mile-ton, fathom-ton, rod-ton, furlong-ton, league-ton, mil-ton, pole-ton, perch-ton, hand-ton, link-ton, chain-ton 8. Power: horsepower, inch-pound per second, foot-pound per second, yard-pound per second, milepound per second, fathom-pound per second, rod-pound per second, furlong-pound per second, league-pound per second, mil-pound per second, pole-pound per second, perch-pound per second, hand-pound per second, link-pound per second, chain-pound per second, inch-ton per second, footton per second, yard-ton per second, mile-ton per second, fathom-ton per second, rod-ton per second, furlong-ton per second, league-ton per second, mil-ton per second, pole-ton per second, perch-ton per second, hand-ton per second, link-ton per second, chain-ton per second 9. Temperature: degrees Fahrenheit The only three countries officially not using the metric system are Liberia, Myanmar and United States of America Prefixes form the basis for larger or smaller units. The units are named using these prefixes: • Kilo = 1000 • Deci = 1/10 • Centi = 1/100 • Milli = 1/1,000 • Micro = 1/1,000,000 • Nano = 1/1,000,000,000