REVIEW MAPWORK EXAM QUESTIONS 31 JULY 2014
Lesson Description
In this lesson we:
Focus on key concepts and exam questions relating to GIS.
Test Yourself
Question 1
The most important component of a GIS is identified as...
A. software.
B. hardware.
C. data.
D. methods.
Question 2
GIS without a computer is referred to as...
A. geo referencing.
B. paper GIS.
C. orthorectifying.
D. spatial analysis
Question 3
This map feature is NOT classified as vector data.
A. points
B. lines
C. images
D. polygons
Question 4
This aspect cannot be classified as attribute data.
A. fields
B. columns
C. tables
D. location
Question 5
This cannot be classified as a type of resolution.
A. spectral
B. temporal
C. spatial
D. raster
Summary
Geographical Information Systems
Spatial Data; Stored Data; Manipulated Data
Components of GIS
PEOPLE: the operator or the user
HARD WARE: components of a computer e.g. monitor, keyboard, mouse, printer, scanner.
SOFTWARE: programs
DATA: spatial and attribute procedure or method
GIS Data
Spatial
Location and the shape
Attribute
Description quantity and quality of a geographical feature
An example of a GIS Application
GIS Applications
Data Input (Data Capturing)
Remote sensing, interviews, scanning, digitizing.
Urban Growth:
225 New Townhouses (2000 -2002)
Agricultural:
Crop Type Mapping
Storage of Data
Raster format and vector format.
Thematic Layers on Maps
Data Output (Data Display)
Maps, images, pictures, tales
Natural Disasters:
Flooding
GIS Applications
Population
Bio-Diversity
Global Warming
Urbanization
Pollution
Congestion
Conservation
Land Use
Oceans
Business Efficiency
Water
Development
Crime
Health
Education
Logistics
Energy
Defense / Security
Environment
Government
Globalization
Agriculture/Food
Public Safety
Remote Sensing
Collect data of a geographical feature from a distance above the earth using satellites and aircrafts
Types of Remote Sensing
Passive remote sensing: simple record the radiation reflected by the earth. E.g. camera.
Active remote sensing: sensors send signals to the earth surface and record how it is reflected back e.g. airborne radar ; ocean bed – sonar e.g. Titanic
0
50
100
150
200
50 year 100 year RMF
Informal
formal
Application of Remote Sensing
Visible light camera
Infra red sensor: senses heat, used by military, water temperature
Radio Detection And Ranging (Radar) Sensor: measure speed, and direction of an object, size of an object; amplitude of ocean currents.
Light Detection And Ranging (LIDAR): greenhouse monitoring in the atmosphere.(global warming trends)
Earth Monitoring Satellite ( LANDSAT): land cover and land use, weather and climate, mining,
Improve your Skills
Question 1
(Adapted from Exemplar 2008, DBE, Paper 2, Question 4.1)
Geographical Information Systems (GIS) can store, manage, analyse and display data. To manage the data in GIS you must look at the different parts that make up the system. Name any TWO parts of GIS that make up the system. (2 x 2) (4)
Question 2
(Adapted from Nov 2009, DBE, Paper 2, Question 4.2)
Topographical Map of Brits
The diagram below illustrates the concept of data layering.
2.1 Explain the meaning of the term data layering. (1 x 2) (2)
2.2 Name any TWO layers of information that one can identify in block G3 on the topographical map. (2 x 2) (4)
Question 3
(Adapted from Nov 2010, DBE, Paper 2, Question 4.3)
Topographical Map of Brits
Data Integration is the process of combining different sets of information for a purpose of decision making. Discuss TWO sets of data that a farmer will use in block A5
Question 4
(Adapted from Nov 2011, DBE, Paper 2, Question 4.1)
Choose a term from COLUMN B that matches a description in COLUMN A.
(3 x 2) (6)
Question 5
(Adapted from Nov 2012, DBE, Paper 2, Question 4.4)
Topographical Map of Brits
GIS allows us to use thematic layers on maps. Refer to the topographic map and identify TWO layers of information that were used in compiling the topographical map.
Question 6
(Adapted from Nov 2013, DBE, Paper 2, Question 4.3)
Port Elizabeth
Which one of the Topographical Map or the Photograph is a raster data.