Grade levels: 7-10

Lesson Objective: The Learner Will Be Able To:
  1. understand how we use latitude and longitude to locate points on the Earth.
  2. find point on a map using latitude and longitude
  3. correctly write coordinates
Materials:
  • Atlases
  • Either computers with access to Etopo Yukon CD Rom map number 115 B and 115 C, or paper copies of Topographic Map 115 B and 115 C ( 1:250,000)
  • 8 x 11 photocopies of the section of map 115 B and 115 C which contains Mount Logan.
  • Either access to the website http://www.phy6.org/stargaze/Slatlong.htm Or photocopies of the latitude and longitude description contained there.
Lesson Process:

1. Hand out the attached worksheet, and either have students locate the website http://www.phy6.org/stargaze/Slatlong.htm or hand out paper copies of the site. Students use the information from thesite to complete the first part of the worksheet.

2. Hand out sections of the map of the area of Mount Logan for students to use to complete the second part of the worksheet.

3. Discuss what has been learned as a class, highlighting key points on the chalkboard. Go over the answers to the worksheet as a class.

4. Finish by playing the game found at:
http://www.nationgeographic.com/xpeditions/activities/01/crackcode.html
Latitude and Longitude Worksheet

Section One:

Use the information from the NASA website on Latitude and Longitude to complete this section of the worksheet.

1. Explain, in your own words, what latitude is and how it is measured:





2. Explain, in your own words, what longitude is and how it is measured:





3. Why is it important to know a point’s latitude and longitude? How can it be useful?





4. What is the latitude of the equator? What is the latitude of the North Pole? The South Pole?





5. What is the difference between positive and negative latitude?





6. What is a meridian ?





7. What is the Prime Meridian? Where is it?





8. Where is 180E W? Where is 180EE? How far are they from each other?





9. How many degrees of longitude are equivalent to one hour’s time difference? Can you explain why this is?





10. Where and what is the International Date Line?







Section Two:


Using Latitude and Longitude to locate a position on a map:

Latitude and longitude are written as follows:

A. Latitude is always written first, starting with the degrees (E), then the minutes (N), and finally the seconds (O), and then the letter N for north or S for south.

63E 28 N15 O N would be 63 degrees, 28 minutes and 15 seconds north of the equator.

B. Longitude is written second, in the same format, but followed by E or W.

63E 28 N15 O N 110E 50N 10O E

When you are using a map, latitude and longitude are marked off along the horizontal and vertical margins of the map.. The numbers to the side of the map indicate the degrees of latitude, while the ones at the top or bottom indicate longitude. On a very large-scale map, such as the one you are looking at, minutes will also be indicated. The black and white lines at the sides and bottom are marked off in groups of 5 minutes, and groups of 15 are indicated by number. To calculate the minutes or seconds where they are not indicated, you can use a ruler to measure and divide the degrees into halves, thirds, etc. to get a rough estimate.

Use the map of the Mount Logan area your teacher has handed you. Find five different locations on the map, and write down their coordinates (the latitude and longitude). Exchange the coordinates with a classmate, and find points indicated by their coordinates. Mark the points on your map. Put your name on the map and hand it in.

Answer the following questions:

1. What is the easternmost longitude shown on this map? The westernmost?





2. What is the most northerly latitude shown? The most southernly?