Skip to content

Geographic Information System | Application, Problems & Data Representation

Geograpphy Sec Sch

Geographic Information System can be applied in different field which include defence, agriculture, mining, transport, urban planning, census, surveying etc.

Problems of GIS in Nigeria

  1. Inadequate power
  2. Inadequate personnel
  3. Inadequate capital
  4. Poor communication
  5. Low level of technology
  6. Lack of GIS institutions.

 

Data representation

GIS data represents real objects (such as roads, land use, elevation, trees, waterways, etc.). Real objects can be divided into two abstractions: discrete objects (e.g., a house) and continuous fields (such as rainfall amount, or elevations). Traditionally, there are two broad methods used to store data in a GIS for both kinds of abstractions mapping references: raster images and vector.

GENERAL EVALUATION QUESTIONS

  1. What is GIS?
  2. Mention two features that can be represented with GIS.
  3. State three cultural features.
  4. Mention five physical features in your environment
  5. Define geography.

WEEKEND ASSIGNMENT

  1. The instrument used in measuring the intensity of earthquake is called (a) barograph (b) binocular (c) seismograph (d) thermometer
  2. Fold mountains are formed mainly by (a) compressional forces (b) earthquake (c) erosional activities (d) eruption of molten magma
  3. “They are crystalline, non-stratified, hard and impervious”. The rock type described above is (a) calcareous (b) carbonaceous (c) igneous (d) sedimentary
  4. The shortest distance between any two points on the earth is along the (a) great circle (b) grid line (c) prime meridian (d) poles
  5. River capture is also known as river (a) confluence (b) divide (c) misfit (d) piracy

 THEORY

  1. List four areas of application of GIS.
  2. Explain two major problems affecting the application of GIS.

 

See also

MAJOR LANDFORMS OF THE WORLD

GEOGRAPHIC INFORMATION SYSTEM (GIS)

ROCKS OF THE EARTH

INTERNAL STRUCTURE OF THE EARTH

STRUCTURE OF THE EARTH

 

Related Words

  • geographic information systems
  • geographic information system definition
  • geographic information systems jobs
  • geographic information system example
  • geographic information system definition geography
  • geographic information systems ap human geography
  • geographic information systems degree
  • geographic information systems salary
  • geographic information system in a sentence
  • geographic information systems certificate
Search For Lessons, Past Questions and Scholarships Below
SUBSCRIBE BELOW FOR A GIVEAWAY

We built School Portal NG to specially serve as an alternative means to provide free education for the less-privileged children or children born to low-income earners, adults who otherwise cannot afford to finance their way through school.

  Building & maintaining an elearning portal is very expensive, but this portal is free. Help to keep this learning portal free by donating or supporting us. We accept donations, grants, sponsorships & support to help reach out to more children. Thank you so much. Click here to donate

Leave a Reply

Your email address will not be published. Required fields are marked *

School Portal NG