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MAT > Units of Measurement > Flashcards

Units of Measurement Flashcards

1
Q

ampere

A

A measure of electrical current.

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2
Q

Avogadro’s number

A

A unit of relative quantity equal to the number of atoms or molecules per mole of a substance. The current accepted value is 6.0221415 x 10^23 per mole.

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3
Q

avoirdupois

A

Fancy name for the weight scale based on a pound containing 16 ounces.

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4
Q

baker’s dozen

A

13 units (one more than a ordinary dozen).

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5
Q

barrel

A

A measure of liquid volume equal in the United States to 31.5 gallons; it’s also half a hogshead and one-quarter of a butt.

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6
Q

Beaufort

A

A scale that measures wind speed; also used for measuring hurricanes.

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7
Q

bit

A

The smallest unit of information used in computer engineering, equal to one-eighth of a byte.

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8
Q

bolt

A

A large roll of cloth.

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9
Q

bucket

A

2 pecks or 16 quarts (dry measure).

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10
Q

bushel

A

2 buckets or 4 pecks (dry measure).

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11
Q

butt

A

2 hogsheads or 4 barrels - i.e., 126 gallons (liquid measure).

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12
Q

byte

A

A unit of information used in computer engineering, equal to 8 bits.

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13
Q

caliber

A

A measure of the diameter of a bullet or shell.

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14
Q

carat

A

A jeweler’s measure of weight (for diamonds) or purity (for gold).

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15
Q

Celsius

A

A temperature scale, also called centigrade, that places the freezing point of water at 0 degrees and the boiling point at 100 degrees.

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16
Q

coulomb

A

A measure of electric charge.

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17
Q

cord

A

A quantity of logs measuring 128 cubic feet.

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18
Q

cubit

A

An ancient unit of length equal to about 18 inches.

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19
Q

curie

A

A unit of radioactivity.

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20
Q

decibel

A

A customary logarithmic measure most commonly used for measuring sound.

21
Q

dram

A

One sixteenth of an ounce.

22
Q

elite

A

A unit of type measurement.

23
Q

Farenheit

A

A temperature scale that places the freezing point of water at 32 degrees and the boiling point at 212 degrees.

24
Q

fathom

A

A measure of water depth equal to 6 feet.

25
Q

flagon

A

A traditional unit of liquid measurement equal to a gallon.

26
Q

furlong

A

Unit of distance equal to 220 yards or one-eighth of a mile .

27
Q

gill

A

4 ounces (liquid measure).

28
Q

grain

A

One seven-thousandth of a pound.

29
Q

hectare

A

A unit of land measurement equal to 2.47 acres.

30
Q

hertz

A

Measure of frequency.

31
Q

hogshead

A

2 barrels or one-half of a butt - i.e., 63 gallons (liquid measure).

32
Q

joule

A

A quantity of energy.

33
Q

Kelvin

A

A temperature scale that sets absolute zero (the freezing point of all matter) at 0 degrees; its degrees are equivalent to degrees Celsius +273.

34
Q

knot

A

A measure of speed on the sea.

35
Q

league

A

A unit of distance, used nautically, equaling 3 miles or 4.8 kilometers.

36
Q

ohm

A

A measure of electrical resistance.

37
Q

peck

A

8 quarts or one-quarter of a bushel (dry measure).

38
Q

pH

A

A scale that measures whether a substance is an acid or a base. It goes from 0 to 14: 0 is an acid, 14 is a base, and 7 is neutral.

39
Q

pica

A

A unit of type measurement.

40
Q

quintal

A

A unit of weight equal to 100 kilograms.

41
Q

Richter

A

A logarithmic scale that measure tremors, earthquakes, and the like.

42
Q

rod

A

16.5 feet or 5.5 yards.

43
Q

Saffir-Simpson

A

A scale that measures the intensity (called a category) of an earthquake.

44
Q

score

A

A traditional unit of quantity equal to 20.

45
Q

stone

A

A unit of weight equal to 14 pounds or 6.4 kilograms.

46
Q

troy

A

A weight scale in which, unlike the more common avoirdupois scale, a pound contains only 12 ounces.

47
Q

volt

A

A unit of electrical output.

48
Q

watt

A

A measurement of power.

MAT (29 decks)

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