LATITUDE AND LONGITUDE
GEOGRAPHY 2840
LAB #1


Refer to grid lines on a globe:

1. The lines running north-south represent degrees of____________________ which is measured from the____________________in a____________________ and____________________direction. These lines are known also as____________________.

2. The lines running east-west represent degrees of____________________ which is measured from the____________________in an ____________________and ____________________direction. These lines are known also as____________________.

3. The geographic grid used on the globe is based on the division of a circle in____________________ degrees. Each degree is divided into____________________equal parts called minutes, and each minute into____________________equal parts called____________________.

4. Latitude is numbered from____________________degrees at the equator to____________________degrees at either pole.

5. Longitude is numbered from____________________degrees at the prime meridian to____________________degrees at the international date line.

6. A degree of latitude is approximately____________________miles at the equator and____________________miles at the poles. A degree of longitude is approximately____________________miles at the equator and____________________miles at the poles.




LENGTH OF A DEGREE OF LONGITUDE: A degree of longitude varies in length at different latitudes, becoming shorter as the latitude increases. The table below illustrates this:

Length of a Degree of Longitude

At Latitude Statute Miles At Latitude Statute Miles
0 69.171 50 44.552
10 69.128 60 34.674
20 65.026 70 23.729
30 59.956 80 12.051
40 53.063 90 0.000

Based upon the above table, answer questions 7-12.

7. How do the length of parallels differ as one approaches the poles?


8. What is the distance in miles around the world at the equator?


9. What is the distance around the world at 40 ° South Latitude?


10. At which latitude is the distance around the world one-half of the equatorial distance?


11. How many miles between a point 60 ° North Latitude and 30 ° West longitude and a point 60 ° North Latitude and 60 ° East Longitude?


12. How many miles between a point 30 ° South Latitude and 60 ° West Longitude and a point 30 ° South Latitude and 80 ° East Longitude?


13. Define GEOGRAPHIC COORDINATE.


USE THE FIGURE BELOW TO ANSWER QUESTIONS 14-19


14. What are the coordinates of point A?_____________________

15. Locate the same coordinates on a globe. In what country is point A located?_____________________

16. What are the coordinates of point B?_____________________

17. Locate the same coordinates on the globe. In what country is point B located?_____________________

18. Locate a point at 10 ° South Latitude and 45 ° West Longitude. Mark it CB.

19. Locate a point at 20 ° North Latitude and 75 ° East Longitude. Mark it D.

20. By examining the coordinates only, determine the APPROXIMATE distance between:

  1. New Orleans and St. Louis_____________________
  2. Philadelphia and Denver_____________________
  3. Wilmington, N.C. and Los Angeles_____________________
  4. Madrid, Spain and Edinburgh, Scotland_____________________

21. Write the following in their correct form:

60 degrees, 29 minutes, 5 seconds, North Latitude ____________________

10 degrees, 20 minutes, 50 seconds, South Latitude ____________________

125 degrees, 45 minutes, 3 seconds, West Longitude ____________________

22. Correct the errors in the following:

89° 47' 65" S ____________________

185° 24' 37" E ____________________

65° 77' 42" W ____________________

40° 50" 21' S ____________________

23. What is the latitude and longitude of Chicago Ill.?


24. What large city has a similar latitude to that of Chicago (Europe)?


25. What is this cities Latitude and longitude?


26. What large city in Asia has a similar latitude to that of Chicago?


27. What is this city's Latitude and Longitude?


28. The term "antipodes" refers to two places on opposite sides of the earth so that a straight line drawn through the earth from one to the other passes through the center of the earth. To be exact antipodes, two places must be 180 ° of longitude away from each other, antipode must be as many degrees north latitude as the other is south latitude.

What are the coordinates of the antipode of Chicago?____________________

What is the nearest large land mass?____________________

What is the nearest large city?____________________

29. Below are some geographic grid coordinates for selected cities of the world. Examine an atlas and identify each city.

34° 03' N, 118 ° 15' W ____________________
34 ° 20' S, 58 ° 30' W ____________________
52° 21' N, 4 ° 52' E ____________________
61 ° 12'N, 149 ° 48' W ____________________

30. A number of cities are listed below. Using an atlas, give latitude and longitude of each in degrees and minutes.

Milwaukee, Wisconsin ____________________
Quito, Ecuador ____________________
Calcutta, India ____________________
London England ____________________
Capetown, South Africa ____________________
Moscow, Russia ____________________
Miami, Florida ____________________

31. Latitude and longitude readings can written in several different forms:

DDD.DDD = 38.4321°
DDD.MM.MMM = 38° 25.926'
DDD.MM.SS.SSS = 38° 25' 55.56"

a) Convert from DD.MM.SS.SSS to DD.MM.MMM

N52° 23' 48" W129° 55' 43" _________________________________

b) Convert from DD.MM.MMM to DD.DDDDDD

N87° 02' 45" W02° 34' 12" __________________________________

b) Convert from DD.DDD TO DDD.MM.SS.SSS

S 34.9876° W 32.4567°____________________________________

 

That's all folks! Answers are posted here but I recommend you try to do the lab BEFORE looking at the answers!