Questions and Answers
Converting from one system of units to another requires a ______ approach
methodical
This fact sheet is intended as a reference for converting many different types of ______
measurements
Gabriel Mouton proposed a decimal system that was instead based on the ______ of the earth
circumference
Thomas Jefferson presented the 'Plan for Establishing Uniformity in the Coinage, Weights, and Measures of the United States,' which advocated for a decimal system in which units were related to each other by ______ of ten
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In 1795, the metric system was formally defined in ______ law
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By 1875, two thirds of the European population, and nearly half the world's population had adopted the ______ system
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SI is the standard metric system that is currently used, and consists of seven SI base units of length, mass, time, temperature, electric current, luminous intensity, and ______ of substance.
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Since US customary units (USC) are so entrenched in the United States, and SI is already used in most applications where standardization is important, everyday use of USC is still prevalent in the United States, and is ______ to change.
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Avoirdupois weight system was adopted during the reign of Queen Elizabeth in the 16th century. It was a system based on the weight of coal, and its name was derived from the French phrase 'avoir de pois' (goods of weight or ______).
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In China, the first emperor Shi Huang Di created a system of weights and measures in the third century BCE (Before the Common Era). The measurement of weight was based on the shi, which was equivalent to approximately ______ pounds.
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An electric resistance heating system rated at 25 kW is to be replaced with a propane furnace. What BTU/Hr rating of propane furnace is needed for the same heating capacity? Under the Power category in Table 1, locate the numeral '1' under the kW column. Then under the BTU/Hr column, find the multiplier of ______. The BTU/Hr rating of the propane furnace to be equivalent to the electric heating system is 85,300 BTU/Hr (25 x ______).
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The area of the 160 acre field in hectares is 64.8 hectares (160 x ______). For another exercise involving area, calculate how many sq ft (square feet) are in a plot that is 0.6 hectare. Find the numeral '1' under hectare column and read the multiplier of 107,639 on the same line to the left under sq ft column. Then calculate the number of square feet as 64,583 (0.60 x ______).
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The power that can be generated by 1,500 plants is 1,340,000 kW (1,500 x 895). To avoid use of trailing 0's or powers of 10, use the SI prefixes in Table 2. The answer can be expressed as 1,340 MW or ______.
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Using Table 3, find the equation to change from degrees C to degrees F. So a temperature of -27 C is -16.6 F (-27 C x ______ + 32), or rounded off to -17 F.
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Converting Metric Units: To convert from one metric unit to another metric unit, we can use either the method of moving the decimal point or the method of using unit fractions. Both methods are shown in Sample Set A. Convert 3 ______s to grams. a. 3 kg can be written as 3.0 kg. Then, thus, (\text{3 kg = 3,000 g}).
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The weight of a body is related to ______ whereas the mass of a body is not. For example, your weight on the earth is different than it is on the moon, but your mass is the same in both places. Mass is a measure of a body's resistance to motion. The more massive a body, the more resistant it is to motion. Also, more massive bodies weigh more than less massive bodies. Converting Metric Units: To convert from one metric unit to another metric unit, we can use either the method of moving the decimal point or the method of using unit fractions. Both methods are shown in Sample Set A. Convert 3 kilograms to grams. a. 3 kg can be written as 3.0 kg. Then, thus, (\text{3 kg = 3,000 g}).
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The weight of a body is related to gravity whereas the ______ of a body is not. For example, your weight on the earth is different than it is on the moon, but your ______ is the same in both places. Mass is a measure of a body's resistance to motion. The more ______ive a body, the more resistant it is to motion. Also, more ______ive bodies weigh more than less ______ive bodies. Converting Metric Units: To convert from one metric unit to another metric unit, we can use either the method of moving the decimal point or the method of using unit fractions. Both methods are shown in Sample Set A. Convert 3 kilograms to grams. a. 3 kg can be written as 3.0 kg. Then, thus, (\text{3 kg = 3,000 g}).
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In the category of Bulk Density in Table 1, find the numeral '1' under the g/cu cm column. Reading to the left on that line, get the multiplication factor of ______ under the pounds/cu yd column. So a bulk density of 1.33 g/cu cm is equivalent to 2,241.8 pounds/cu yd (1.33 x ______). But we want to know how many tons per cubic yard. So now proceed to the Weight category and find the numeral '1' under the pound column and read to the right to either ton (short) or ton (long). If we want the answer in short tons, the multiplication factor is 5.000E-04. The final answer is that a bulk density of 1.33 g/cu cm is equivalent to 1.12 short tons/cu yd (2241.8 x 5.000E-04).
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