Embedded Files
In this section we are going to look at some of the ways that maps can be used to represent data in geography
Every map needs to have the following things
a title
a key
a North Point
a Frame
a Scale
1. Map distributions
2. Densities and Flows
Dot maps
A map where a dot is used to represent data on a map so that a pattern can be determined. Sometimes the dots can be different sizes to help represent larger numbers. (like proportional symbols)
Flow lines
Where lines can be used to show any kind of movement between two or more places and might represent traffic flow, pedestrian flow, numbers of shoppers etc
Choropleth maps
Where the values on the map are split up into 4 or 5 classes or groups of equal size. The colours should get darker as the values increase. This can be used to map percentage areas
Isoline maps
This is where lines are used to jpin points of equal values. the best example are contour lines on an OS map.
See if you can investigate what some of the advantages and disadvantages might be for each of these types of graph.
Some questions to help you practice your skills
For each graph answer the following 2 questions:
1: What type of map is this?
2: How would you describe and explain the pattern in each map below?
Describe = describe the pattern - the highs and the lows
Explain = explain WHY the pattern might be this - what are the similarities and what are the differences?
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