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Class 1b: Introduction to maps. What is a map? A two-dimensional representation of the spatial distribution of selected phenomena.

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Presentation on theme: "Class 1b: Introduction to maps. What is a map? A two-dimensional representation of the spatial distribution of selected phenomena."— Presentation transcript:

1 Class 1b: Introduction to maps

2 What is a map? A two-dimensional representation of the spatial distribution of selected phenomena

3 Why make maps?

4 Latitude and longitude Latitude: how far north or south

5 Latitude and longitude Longitude: how far east or west

6 How do we read maps?

7 Map scale Ratio of the distance on the map to the distance on the ground

8 Map scale 1.Graphic:

9 Map scale 2.Verbal: 1 inch equals 10 miles

10 Map scale 3.Representative fraction or ratio: 1:24,000

11 Map symbolization

12 Point symbols Every symbol counts as one occurrence

13 Line symbols One-dimensional

14 Area symbols Each territory or region has one value

15 Topographic maps

16

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18 Map projections Project a round globe onto a flat surface

19 Map projections Three properties to consider

20 Cylindrical projections Shapes are preserved, but not area

21 Conic projections

22 Planar projections

23 Other projections


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