Edexcel GCSE Geography A 1GA0
Changing Cities
Coastal Landscapes and ProcessesLandscape option
Ecosystems, Biodiversity and Management
Energy Resource ManagementResource option
Geographical Investigations – Fieldwork
Geographical Investigations − UK Challenges
Geographical Skills
Glaciated Upland Landscapes and ProcessesLandscape option
Global Development
Mathematics and Statistics Skills
Resource Management
River Landscapes and ProcessesLandscape option
The Changing Landscapes of the UK
Water Resource ManagementResource option
Weather Hazards and Climate Change
Mathematics and Statistics Skills
Using GIS and geo-spatial data
- 3 things to know
- All three papers
Overview
Geographical information systems and geo-spatial data, layers and flood risk, interactive and online flood maps, satellite data, describing the pattern on a digital risk map, the main limitation of such systems, and using them to plan new housing.
What you need to know
Answer each one before you reveal it.
What is a geographical information system?
What makes a set of data geo-spatial?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is a geographical information system?
Model answer
A computer system that stores, displays and analyses information tied to locations, so several sets of data can be mapped together.
- 2
What makes a set of data geo-spatial?
Model answer
Every value in it is attached to a place, usually by coordinates, so it can be positioned accurately on a map.
- 3
How is the information in such a system organised on screen?
Model answer
In layers, each holding one kind of information, which can be switched on or off and viewed on top of one another.
- 4
Why are layers so useful when investigating the risk of flooding?
Model answer
A layer showing land liable to flood can be placed over a layer of houses and roads, revealing exactly which properties would be affected.
- 5
What can a user do with an interactive map that a printed one does not allow?
Model answer
Zoom in and out, turn layers on and off, and click on a feature to read the figures behind it, rather than seeing one fixed view.
- 6
How might somebody buying a house use an online flood map?
Model answer
To check whether the property falls inside an area marked as at risk, and how likely flooding there is judged to be.
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