What is the most widely used grid system on Earth?
Longitude lines that measure 0-180 degrees East or West of the Prime Meridian
0 Degree Longitude line that passes through Greenwich, England
Latitude lines that measure 0 - 90 degrees north or south of the Equator
66.5 degrees North
66.5 degrees South
Tropic of Capricorn
23.5 degrees South & experiences Sun's vertical rays on December 21-22 (WS)
Tropic of Cancer
23.5 degrees North & experiences Sun's vertical rays on June 21-22 (SS)
0 Degrees N/S & experiences Sun's vertical rays on March 21-22 (SE) and September 22-23 (FE)
equates a specific linear distance on the map with a certain ground distance
Linear/ Bar Scale
Consist of a calibrates line/bar which represents ground distances.
Fractional Scale/Representative Fraction
Given as a ratio of a given unit of length on the map to the number of those same unites on the ground. 1:1,000,000 or 1/1,000,000
inches per mile
Convert RF 1:950,400 to Verbal Scale
1 inch = 15 miles
Convert Verbal Scale 1" = 300 miles to RF
Method to convert to RF to Verbal Scale
Divide 63,360 by denominator (right of colon)
Method to convert Verbal Scale to RF
Multiply 63,360 by verbal scale
distance in feet, miles, kilometers measured along a line between two points.
(Degrees, Minutes, Seconds) Smallest angle between two points measured across meridians and parrellels
Directional system using degrees. North - 0/180, East - 90, South - 180, & West - 270
Directional system using compass directions. North, South, East, and West
Which continents does the Tropic of Capricorn pass through?
South America, Africa, and Australia
Which continents does the Tropic of Cancer pass through?
North America, Africa, and Asia
Which continent does the International Date Line pass through?
5280 feet referred as a "mile".
Distance Between Latitudes
60 minutes or 3,600 seconds
Approximately how many STATUTE miles is Miami, Florida, located at 25 degrees N, 80 degrees W, from the South Pole? 7500 8000 8500 9000
At its maximum, east longitude extends how many degrees? 0 23.5 90 180
Calculate the representative fraction when the verbal scale is 1 inch = 25 miles (select closest answer). 1: 1,467,000 1: 1,563,000 1: 1,584,000 1: 1,458,000
Calculate the verbal scale when the representative fraction is 1:4,000,000 (round to the nearest 10 mile interval). 1 inch = 50 miles 1 inch = 60 miles 1 inch = 90 miles 1 inch = 100 miles
1 inch = 60 miles (True Answer 63.13)
From the North Pole, one degree of latitude extends approximately how many statute miles on the ground? 40 50 60 70
70 (True Answer 69)
How many SECONDS of latitude are there between 26 degrees S and 14 degrees N? 135,000 144,000 154,000 169,000
The equatorial circumference of Neptune is 96,695 miles. On Neptune, one degree of longitude would be equal to approximately how many statute miles? 377.19 268.59 293.45 318.67
96,695/360 = 268.59
There are how many degrees of latitude between the Tropic of Capricorn and the Arctic Circle? 23.5 47 90 180
90 (23.5 + 66.5)
What is the longitude of a point 3/4 of the distance between the Prime Meridian and 60 degrees W as measured in an EASTERLY direction from the Prime Meridian? 147 degrees E 114 degrees S 135 degrees W 167 degrees N