Lab A - The International System Of Units (Si), Statistical Data, Graphs, And Contour Analysis
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8PHYSICAL GEOGRAPHY GPH111
LAB A - THE INTERNATIONAL SYSTEM OF UNITS (SI), STATISTICAL DATA,
GRAPHS, and CONTOUR ANALYSIS
Introduction
The United States has been slow to adopt the International System of Units (SI), called the
Metric System prior to 1960, though science and business throughout most of the world employ
it exclusively. Global integration and the desire for standardization have accelerated conversion
to the SI, though remnants of the English System still remain. In order to understand and use
scientific data presented by the global community, it is important for the student of geography to
be able to use both the SI and English systems interchangeably. This lesson will present the
student with a general understanding of the International System of Units (SI) and the formulas
necessary to convert from the English System to SI and vice versa.
Materials needed: pencil, ruler and calculator
Part I. SI Conversion - Length and Area
Using the formulas below, solve problems A-P.
1 mile (mi) = 1.609 kilometers (km)
1 millimeter (mm) = 0.039 inches (in)
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2
1 square mile (mi
) = 2.59 square kilometers (km
)
1 foot (ft) = 0.3048 meters (m)
1 kilometer (km) = 0.621 miles (mi)
1 inch (in) = 2.54 centimeters (cm)
2
2
1 square kilometer (km
) = 0.386 square miles (mi
)
1 inch (in) = 25.4 millimeters (mm)
1 kilometer (km) = 1,000 meters (m)
1 hectare (ha) = 2.471 acres (ac)
1 meter (m) = 3.281 feet (ft)
1 acre (ac) = 0.4 hectares (ha)
1 centimeter (cm) = 0.39 inches (in)
1 mile (mi) = 5280 feet (ft)
1 yard (yd) = 3 feet (ft)
1 meter (m) = 100 centimeters (cm)
1 meter (m) = 1000 millimeters (mm)
10 millimeters (mm) = 1 centimeter (cm)
Be sure to show your work on a separate piece of paper!!
A. 15 miles = ___________ kilometers
I. 625 kilometers = ___________ miles
B. 80 hectares = ___________ acres
J. __________ kilometer(s) = 3,281 feet
C. 5 inches = __________ centimeters
K. 48.5 centimeters = ___________inches
D. 77.44 meters = ___________feet
L. 385.25 hectares = ____________ acres
E. ____________ meters = 87 yards
M. 153 kilometers = ___________miles
F. 80 inches = __________ millimeters
N. 127 millimeters = _________ inches
G. 485 millimeters = __________ inches
O. 25 acres = __________ hectares
H. 842 kilometers = ____________ meters
P. 45,000 millimeters = __________ kilometers
A-1
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