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Understanding the Physical World

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Presentation on theme: "Understanding the Physical World"— Presentation transcript:

1 Understanding the Physical World
Unit I: Introduction CYurky World History 10 Homer-Center Understanding the Physical World

2 Bell Ringer In at least three lines, explain what is wrong with this image of the earth.

3 Standards

4 Objectives

5 Tools of a Geographer

6 Tools To study the world, geographers use Maps / Globes Charts/ Data
Satellites Computers

7 Map Types

8 Types of maps

9 Political

10 Political

11 Political

12 Physical

13 Physical

14 Thematic

15 Thematic

16 Thematic

17 Thematic

18 Thematic

19 Mobility

20 Mobility

21 Globes and Projections

22 Globe

23 Globe A good globe can provide the most accurate representation of the Earth. However, a globe isn't practical for many of the functions for which we require maps. 

24 Globe Advantages: Disadvantages: Directions—True
Distances—True Shapes—True Areas—True Disadvantages: Even the largest globe has a very small scale and shows relatively little detail. Costly to reproduce and update. Difficult to carry around. Bulky to store.

25 Projections A map projection is a way to represent the curved surface of the Earth on the flat surface of a map.

26 Projections Maps allow us to represent some or all of the Earth's surface, at a variety of scales, on a flat surface Map projections also apply to digital map data, which can be presented on a computer screen.

27 Every map is wrong… No map can rival a globe in truly representing the surface of the entire Earth. Every flat map misrepresents the surface of the Earth in some way. However, a map or parts of a map can show one or more—but never all—of the following: True directions. True distances. True areas (size). True shapes. lies my teachers (and atlasses) tell me

28 Projections The mathematics of projection do not permit any particular map projection to be "best" for everything. Therefore a diversity of projections exists to service the many uses of maps and their vast range of scales.

29 Projections Every projection has its own set of advantages and disadvantages. There is no "best" projection. The appropriate projection for a map depends on the scale of the map, and on the purposes for which it will be used. 

30 Kinds of projections

31 Projections Four basic ways of projecting the map 

32 Mercator Used for navigation or maps of equatorial regions
Directions  are true between any two points Distances are true only along Equator (Two particular parallels can be made correct in scale instead of the Equator) Areas and shapes of large areas are distorted. 

33 Peters True area True direction

34 Robinson Size – true Shape – true

35 Goodes

36 The Physical World

37 Landforms

38 Altitude

39 Climate


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