Geographical Information Systems (GIS) (Grade 11 NSC Matric Geography): Flashcards
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Practise the cards
10 cards from this deck
Spatially referenced data
Spatially referenced data
Info linked to a specific location on Earth
Geographic co-ordinates system
Geographic co-ordinates system
Uses latitude & longitude to define position on Earth
Latitude lines direction & measurement
Latitude lines direction & measurement
Run horizontally (E-W), measure N or S from equator
Longitude lines direction & measurement
Longitude lines direction & measurement
Run vertically (N-S), measure E or W from Prime Meridian
Order in coordinate pairs
Order in coordinate pairs
Longitude before latitude
Negative coordinate values meaning
Negative coordinate values meaning
South (for latitude) or West (for longitude)
Two main coordinate formats
Two main coordinate formats
DMS (Degrees, Minutes, Seconds) & Decimal Degrees (DD)
GIS (Geographic Information System)
GIS (Geographic Information System)
System to visualise & analyse spatially referenced data
Binary data/files
Binary data/files
Computer-encoded data humans can't read directly
Attributes in GIS
Attributes in GIS
Descriptive info/fields describing feature properties