Advanced Metric Flashcards
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1 Advanced Metric Flashcards Revision The lower-left corner of each card indicates dual or question/answer : a. Dual sided: both sides pose a question answered by the other side. When using for study, mix these up both in order and front-back. b. Answer/Question have a question on one side, the answer on the other. Do not let these become mixed front--back. 2. The lower-right corner indicates the difficulty level: a. CAMS, CMS are suitable for studying for either of USMA s certifications. b. CAMS are the hardest, used only for study for the CAMS certification. c. The USMA has not reviewed or approved of the split between the CAMS and CMS cards. I made the split after reading the descriptions of the certifications, so it may not be entirely accurate. 3. If you print these on a duplex printer, be sure specify binding on the left edge, which is the short edge for these landscape pages. Some printers call this side binding, others call it p binding. 4. You will find some eccentricities unique me; feel free modify or throw away cards you do not like. These fall in two areas: a. Conversions from colloquial units. Some experienced metric instrucrs eschew memorization of conversions. They believe that it is best get a feel for the size of each unit. While this is no doubt true, the United States is going be in transition for many years, so I feel that learning some basic conversions is necessary. b. Style. Although metric style is well defined when compared colloquial style, there are still some areas not specifically addressed by the standards. You will see some of my employer s in-house style guide in a few cards, such as spell out integers less than 100 when used with unit names. 5. These are NOT copyrighted in any way. You may reproduce, print, copy, distribute, and even sell them as you desire, with no attribution me. Jim Elwell, CAMS jameskelwell@yahoo.com 19 February 2002
2 Useful Metric Web Pages U. S. Metric Association, premier advocate of metrication in the USA, a non-profit institution SI Navigar, a web site offering a wealth of metric information and links other metric web sites Metrication consultation services, including training and other services for metricating your business. Publication SP811, from the National Institute of Standards and Technology. You can download this PDF file for free, and have a definitive reference for the use of metric in the United States.
3 yotta Y zetta Z exa E peta P tera T giga G mega M kilo k hec h
4 or or or
5 deka da deci d centi c milli m micro µ (mu) nano n pico p fem f at a
6 10-2 or 0.01 or 1/100 th 10-1 or 0.1 or 1/10 th 10 1 or or 1/ th 10-3 or /1000 th
7 zep z yoc y mass length time electrical current temperature luminous intensity amount of substance
8 kilogram kg ampere A second s meter m mole mol candela cd kelvin K
9 temperature (common) energy, work or quantity of heat force or tension pressure or stress power or radiant flux electrical charge electrical capacitance electrical inductance frequency
10 newn N Also: (kg m)/s 2 joule J Also: N m or W s degree Celsius C coulomb C watt W pascal Pa Also: A s Also: J/s Also: N/m 2 hertz Hz henry H farad F Also: 1/s Also: Wb/A Also: C/V
11 electrical resistance plane angle electrical conductance solid angle electrical potential luminous flux illuminance magnetic flux density magnetic flux
12 siemens Also: A/V S radian rad ohm (omega) Also: V/A lumen lm Also: cd sr volt V Also: W/A steradian sr weber Wb tesla T lux lx Also: V s or J/A or (W s)/a Also: Wb/m 2 Also: lm/m 2 or (cd sr)/m 2
13 radionuclide activity absorbed dose or specific energy imparted dose equivalent volume (technical) speed (common) speed (technical) area (technical) acceleration angular momentum
14 sievert Sv gray Gy becquerel Bq Also: J/kg Also: J/kg Also: 1/s meter per second m/s kilometer per hour km/h cubic meter m 3 kilogram-meter squared per second kg m 2 /s meter per second squared m/s 2 square meter m 2
15 moment of force (rque) moment of inertia power density thermal conductivity area (large) What is the names and symbols for the units of measures for: mass (large) What are the names and symbols for the unit of measures for: time (common) volume (common) What are the names and symbols for the units of measures for: plane angle (astronomy, cargraphy)
16 watt per square meter W/m 2 kilogram-meter squared kg m 2 newn-meter N m metric n or nne or megagram Mg hectare ha Also: square hecmeter hm 2 watt per meter-kelvin W/(m K) What are these units used measure: degree, minute, second,, liter Also: cubic decimeter dm 3 L What are these units used measure: hour, minute second h, min, s
17 energy of subamic particles mass of carbon-12 am length or distance (large) length (small) volume (small) dual - a dual - a dual - a dual - a
18 kilometer km amic mass unit u electronvolt ev dual - b milliliter ml Also: cubic centimeter cm 3 millimeter mm dual - b dual - b dual - b
19 inches millimeters? feet meters? yards meters? miles kilometers? square feet square meters? square yards square meters? acres hectares? teaspoons milliliters? tablespoons milliliters?
20 Property: length or distance yards 1 meters (m) or yards = meters (m) Property: length or distance feet / 3 meters (m) Property: length or distance inches 25 millimeters (mm) Property: area square yards / 1.2 square meters (m 2 ) Property: area square feet / 11 square meters (m 2 ) Property: length or distance miles 1.6 kilometers (km) Property: volume tablespoons 15 milliliters (ml) Property: volume teaspoons 5 milliliters (ml) Property: area acres / 2.5 hectares (ha)
21 cups liters? quarts liters? gallons liters? ounces grams? pounds kilograms? ns megagrams? ounces newns? pounds newns? degrees Fahrenheit degrees Celsius?
22 Property: volume gallons 4 liters (L) Property: volume quarts 1 liters (L) or quarts = liters (L) Property: volume cups / 4 liters (L) Property: mass ns / 1.1 megagrams (Mg) Property: mass pounds / 2.2 kilograms (kg) Property: mass ounces 28 grams (g) Property: temperature ( F - 32) 5 / 9 C (exact conversion) Property: force pounds 4.4 newns (N) Property: force ounces / 3.6 newns (N)
23 calories (food) kilojoules? kilowatthours megajoules? horsepower watts? miles per hour kilometers per hour? PSI kilopascals? cubic inches milliliters? cubic feet liters? BTUs kilojoules? dekatherms gigajoules?
24 Property: power horsepower 750 watts (W) Property: energy kilowatthours 3.6 megajoules (MJ) (exact conversion) Property: energy calories (food) 4 kilojoules (kj) Property: volume cubic inches 16 milliliters (ml) Property: pressure PSI 7 kilopascals (kpa) Property: speed MPH 1.6 kilometers per hour (km/h) Property: energy dekatherms 1 gigajoules (GJ) or dekatherms = gigajoules (GJ) Property: energy BTUs 1 kilojoules (kj) or BTUs = kilojoules (kj) Property: volume cubic feet 28 liters (L)
25 knots meters per second? inches Hg pascals? When measuring temperature differences, how are a degree Celsius ( C) and a kelvin (K) related? angular degrees radians? What are we measuring, and what are the conversion between: liters /from cubic meters? What are we measuring, and what are the conversions between: kilometers per hour /from meters per second? Question USMA: CAMS What are we measuring, and what are the conversions between: millimeters /from centimeters /from meters /from kilometers? What are we measuring, and what are the conversions between: metric ns /from nnes /from megagrams? What are we measuring, and what are the conversions between: square meters /from hectares /from square kilometers?
26 They are the same interval or span of temperature. A change of one degree Celsius (1 C) is the same as a change of one kelvin (1 K). Property: pressure inches Hg 3.4 kilopascals (kpa) Property: speed knots / 2 meters per second (m/s) Answer USMA: CAMS,CMS Property: speed km/h / 3.6 m/s m/s 3.6 km/h (exact conversion) Property: volume liters / m 3 m liters (L) (exact conversion) Property: plane angle angular degrees / 57 radians (rad) Answer USMA: CAMS Property: area square kilometer 100 hectare hectare square meter km m 2 (exact conversions) Property: mass metric n = nne = megagram Property: length or distance kilometer meter meter 100 centimeter meter millimeter centimeter 10 millimeter
27 degrees Celsius kelvin? How is area shown with a symbol? With a name? How is volume shown with a symbol? With a name? What is the capitalization rule for names? For symbols? Describe the difference between a name and a symbol? When do you show a number as a fraction, such as ½ or d? How do we group digits in a long number in the metric system? When are periods used with names? With symbols? When do you make a symbol plural? A name?
28 With symbols use supersript 3: m 3, mm 3 With names use cubic : cubic meter, cubic millimeter With symbols use supersript 2: m 2, mm 2 With names use square : square meter, square millimeter Property: temperature degree Celsius Kelvin (exact conversion) Never use fractions in the metric system. Name: where the unit name is spelled out in the language and alphabet of the user. Symbol: internationally-accepted symbol that does not vary with different languages. Names: capitalize at the start of sentences, except always capitalize Celsius. Symbols: always use the prescribed case; no exceptions. Symbols: never make a unit symbol plural. Names: when the associated number is greater than one (> 1). For both names and symbols use a period only at the end of a sentence. Group five or more digits in groups of three with a space (optionally group four or more digits)
29 What four prefixes should not be used in technical work? With compound units, where do you add a necessary prefix? How do you select which prefix use? How do you show a product (multiplication) with a unit name? A symbol? How do you show a quotient (division) with a unit symbol? A name? What is the rule for spaces between a number and its unit name? Its symbol? When do you spell out a number used with a unit name? Used with a symbol? What three units of measure should not be used in technical work? What units of measure have identical names in the singular and plural? Identical symbols?
30 Select a prefix keep the number 0.1 and <1000. (Not necessary in intermediate calculations, and sometimes ignored in non-technical work.) Add the prefix the first unit name or symbol. (Except kilogram (kg) can appear after the first name or symbol.) hec (100) deka (10) deci (0.1) centi (0.01) h da d c For both names and symbols: one space between the number and the name or symbol: 27 mm, 18 C Symbols: use a solidus (slash): m/s Names: use per : meter per second Names: use a hyphen or space: newn-meter Symbols: use a raised dot or space: N m Names: lux, hertz, siemens Symbols: all of them! hectare (use m 2 or km 2 ) kilometer per hour (use m/s) metric n or nne (use Mg) Names: integers < 100 (integer means no fractional part) Symbols: never
31 Converting from a larger a smaller unit makes the number larger or smaller? Converting from a smaller a larger unit makes the number larger or smaller? What does the symbol SI represent? Estimate the diameter of a: marble golf ball baseball basketball Estimate the mass of a: nickel (coin) tennis shoe hardback book dining room chair What are the seven base units in SI? What is the difference between: base units derived units with names derived units w/o names allowed units temporary units deprecated units Give two examples of each: base units derived units with names derived units w/o names allowed units temporary units deprecated units In SI units, what are each of these (approximately) for water: density freezing temperature boiling temperature Question USMA: CAMS Question USMA: CAMS Question USMA: CAMS
32 The symbol for the modern metric system, from the French Système International d Unités, (International System of Units) Smaller Larger kilogram (kg), mass meter (m), length second (s), time ampere (A), electrical current kelvin (K), temperature candela (cd), luminous intensity mole (mol), amount of substance nickel: 5 g tennis shoe: 200 g hardback book: 800 g chair: 3 kg marble: 10 mm golf ball: 40 mm baseball: 70 mm basketball: 300 mm Density: 1 g per ml or 1 kg per L Freezing: 0 C Boiling: 100 C base: kg, m derived w/names: W, J w/o names: m/s, N m allowed: liter, minute temporary: hectare, knot deprecated: calorie, micron base: seven fundamental unit derived w/names: have special names w/o names: use base or derived units allowed: others that can be used temporary: use for the time being deprecated: should not be used Answer USMA: CAMS Answer USMA: CAMS Answer USMA: CAMS
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