Summary

Summary IEB/NSC - Geo - Mapwork

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Course
Geography

Institution
12th Grade

Map work Techniques • applying map skills and techniques: scale, contours, cross-sections, position, distance, area • direction: magnetic north, true north, bearing and concept of magnetic declination • grid referencing • map and photo interpretation, including: reading and analysis of ...

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Uploaded on June 28, 2023
Number of pages 17
Written in 2021/2022
Type Summary

mapwork

Institution 12th Grade
Course Geography
Schooljaar 204

tennichibs Member since 1 year 8 documents sold

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Mapwork
1. Types of maps
2. Types of symbols
3. Map code
4. Co-ordinates
5. Scale
6. Speed, distance, time
7. Mapwork and photo interpretation
8. Direction
9. Bearing
10. Magnetic declination
11. Magnetic bearing
12. Area

Happy studying!

, 2

Types of maps

Types of maps Description

Topographical - Most accurate - Produced from detailed
land surveys and ariel photographs
- Has both natural features and
man-made
- Scale 1:50 000 (divide by 2)

Cadastral - Property boundaries or administrative
boundaries
- If topographical information is also
included on the map then it’s called
topocadastral

Orthophoto - Contour lines and symbols and lines are
added to an aerial photograph.
- For detailed planning
- Scale: 1:10 000

Isopleth - Isolines join points with equal values so
these maps show contours that join
points of equal value.

Thematic - Information on particular themes such
as agriculture, urban growth, poverty,
tourism, etc.
- Thematic maps can be drawn as
choropleth maps which contain areas
that are shaded, coloured or
cross-hatched to show the value of that
area in relation to the theme of the map

, 3

Types of symbols

Types of symbol Description

Point symbols Used to show features on a map that are too small to be shown in detail.

Linear symbols Used for features which are linear in shapes such as roads, rivers, and
railways

Area symbols Used for features that cover a large area

Map symbols that represent real-life features and objects.

• Color specific:
- Green (vegetation); Brown (contours); Blue (water);
- Red (Human); Grey & Black (Human) & White (natural veld).
• Symbol Specific:
- Point; Line; and Area

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Summary IEB/NSC - Geo - Mapwork

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