The International System of Units - SI

What are the units used to measure MassDistanceVolumeTimeTemperature

What are their symbols?

Water freezes/thaws at 32°

Water vaporizes at 212°

“Absolute Zero” is -459°

Water freezes/thaws at 0°

Water vaporizes at 100°

“Absolute Zero” is -273°

Water freezes/thaws at 273

Water vaporizes at 373

“Absolute Zero”

is 0

To convert ˚C to ˚F :˚C x 9/5, + 32 = ˚F

To convert ˚F to ˚C :˚F – 32, x 5/9 = ˚C

What are the common prefixes we use in metrics?

Prefix Symbol Multiplier Exponential

yotta Y 1,000,000,000,000,000,000,000,000

1024

zetta Z 1,000,000,000,000,000,000,000

1021

exa E 1,000,000,000,000,000,000 1018

peta P 1,000,000,000,000,000 1015

tera T 1,000,000,000,000 1012

giga G 1,000,000,000 109

mega M 1,000,000 106

kilo k 1,000 103

hecto h 100 102

deca da 10 101 1 100

deci d 0.1 10¯1

centi c 0.01 10¯2

milli m 0.001 10¯3

micro µ 0.000001 10¯6

nano n 0.000000001 10¯9

pico p 0.000000000001 10¯12

femto f 0.000000000000001 10¯15

atto a 0.000000000000000001 10¯18

zepto z 0.000000000000000000001 10¯21

yocto y 0.000000000000000000000001

10¯24

Metric Prefix Table

Unit DivisionsSI Equivalent

1 inch (in) 25.4 mm1 foot (ft) 12 in 0.3048 m1 yard (yd) 3 ft 0.9144 m

1 mile (mi)5,280 ft or 1,760 yd

1.609344 km

Survey

1 link (li) 33⁄50 ft 0.201168 m

1 foot (survey)

1200⁄3937 m0.3048006 m

1 rod (rd) 25 li 5.029210 m1 chain (ch) 4 rd 20.1168 m1 furlong (fg)

10 ch 201.168 m

1 mile (survey)

80 ch1.609347 km

Liquid volumeUnit Divisions SI Equivalent

1 minim (min)0.061 611 52 mL

1 US fluid dram (fl dr)

60 min 3.696 691 mL

1 US fluid ounce (fl oz)

8 fl dr 29.573 53 mL

1 US gill (gi) 4 fl oz 118.294 1 mL1 US cup (cp) or (c) 2 gi or 8 fl oz 236.588 2 mL1 (liquid) US pint (pt)

2 cups or 4 gi or 16 fl oz

473.176 5 mL

1 (liquid) quart (qt) 2 pt or 32 fl oz 946.352 9 mL1 (liquid) US gallon (US gal)

4 qt or 128 fl oz or 231 cu in

3.785 412 L

1 beer barrel (bbl) 31 gal 117.347 8 L1 oil barrel (bbl) 42 gal 158.987 3 L1 hogshead 63 gal 238.481 0 L

Avoirdupois weight

The slug. It is a mass that accelerates by 1 ft/s² when a force of one pound-force (lbf) is exerted on it. Therefore a slug has a mass of 32.17405 pound-mass or 14.5939 kg.

The Newton. It is equal to the amount of force required to give a mass of one kilogram an acceleration of one meter per second squared.

KHD(U)DCM

King Henry Died while Drinking Chocolate Milk

Kilo x 1000 Hecto x 100 Deca x 10 (unit) g, m, L Deci x .1 Centi x .01 Milli x .001