The Measurement Process
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Three Components:
Chapter 12
Measurement
1.) What needs to be measured?
2.) What type and size of unit is needed?
How precise does the measurement need to be?
Section 12.1
The Concept of Measurement
Common Measurements
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Length
Area
Volume
Mass
Temperature
Time
3.) How many units of measure are needed to
“reach the end”, “cover up”, or “fill up” what is
being measured?
Choosing the Type of Measure and Unit
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Which type and size of unit would be most
appropriate for the following?
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The amount of land in a subdivision
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The amount of cough syrup in a bottle
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The width of your textbook
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The amount of water in a swimming pool
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The distance from one end of the hallway to the other
Standard Units of Measure (English)
LENGTH
Non--Standard Units of Measure
Non
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Unit
1 yard (yd)
Equivalent
3 feet (ft)
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1 foot (ft)
12 inches (in)
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1 mile (mi)
1760 yards (yd)
or 5280 feet (ft)
1
Standard Units of Measure (English)
AREA
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Unit
1 square foot
(sq ft or ft²)
Standard Units of Measure (English)
CAPACITY
Equivalent
144 square inches
(sq in or in²)
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1 square yard (yd²)
9 ft²
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1 acre
43, 560 ft²
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1 square mile
3, 097, 600 yd²
or 27, 878, 400 ft²
Standard Units of Measure (English)
WEIGHT
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Unit
1 pound (lb)
Equivalent
16 ounces (oz)
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1 ton
2000 lb
1 quart (qt)
2 pt
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1 gallon (gal)
4 qt
Equivalent Units
1000 basic units
100 basic units
10 basic units
0.1 basic units
0.01 basic units
0.001 basic units
Comparing English and Metric Units
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3.) How many cm are in 2 m 175 mm?
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Basic Metric Unit
Kilo-Kilo
(k)
Hecto-Hecto
(h)
Deka-Deka
(da)
Deci-Deci
(d)
Cent-Cent
(c)
Milli-Milli
(m)
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2.) How many cups are in 3 gallons?
Equivalent
2 cups
Standard Units of Measure (Metric)
Converting One Unit to Another
1.) Sally wants to rere-carpet her living room, which
measures 15 ft x 18 ft. How many square yards
of carpet will Sally need?
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Unit
1 pint (pt)
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Meter – a little longer than a yard (1 m – 1.09 yd)
Kilometer – about 3/5 of a mile
Centimeter – about the width of fingernail on little finger
(2.54 cm ≈ 1 in)
Millimeter – the thickness of a dime
Liter – a little more than a quart (1 L ≈ 1.06 qt)
Milliliter – about a teaspoon of water
Gram – about the same mass as two raisins or two
paperclips
Kilogram – about 2.2 pounds
Milligram – about the mass of one human hair
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Measuring Time
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United States:
A.M. and P.M.
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Europe and Military: 2424-hour day
Measuring Temperature
F = 9/5 C + 32
C = 5/9 (F – 32)
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Days,
Da s Weeks (wk),
( k) Months (mo),
(mo) and Years (yr)
( r)
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Decades and Centuries
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Light-years (measure of distance based on time)
Light180,000 mi/s is the distance light travels in a year
Converting From Fahrenheit to Celsius
1.) How many degrees Fahrenheit would be
equivalent to 20º Celsius?
2.) How many degrees Celsius would be
equivalent to 98º Fahrenheit?
3