Section: Raster
Answers to section modules.

  • Module Name Georeferencing
Question: Georeferencing flows us to

  • Module Name Raster calculator
Question: Is the Unique Values render type specific to raster data only
Answer: Yes

Question: Which of these datasets can we apply arithmetic operations on
Answer: A GIS raster dataset where each pixel represents the depth of a flood

Question: Raster calculator can be used with Digital elevation models
Answer: True

  • Module Name Multi band Satellite Imagery
Question: What is a satellite image
Answer: A raster layer that has pixel values which represent natural phenomenon

Question: What statement best describes the spatial resolution of a satellite image
Answer: When the satellite contains more than 1 spectral band

Question: Can satellite imagery be used to monitor plant growth with consideration that plants grow rapidly
Answer: True

  • Module Name Raster to vector conversion
Question: When is it necessary to convert a raster to vector
Answer: When we have derived new information and such that further analysis require data to be combined with other vector sources.

Question: Why would you want to have two different map layouts using the same layer
Answer: Vectorisation can only be done on a raster that has been classified or a raster layer that is a mask.

Question: Can you calculate total area for raster cells greater than 100m without converting to vector
Answer: False

  • Module Name Stream catchment delineation
Question: What does the abbreviation DEM stand for
Answer: Digital elevation model

Question: Which of these represents a derivative of a digital elevation model
Answer: A slope curvature map that is used by surveyors to determine the direction at which the sun shines

Question: Are plugins accessible in the processing toolbox of QGIS
Answer: True

  • Module Name Clipping Rasters
Question: DEM is an abbreviation for
Answer: Digital elevation model

Question: Which of these represents a derivative of a digital elevation model
Answer: A slope curvature map that is used by surveyors to determine the direction at which the sun shines

Question: Plugins are extensions in QGIS
Answer: True

  • Module Name Zonal Operations
Question: What is population density and how is it calculated

Question: What is the difference between EPSG:4326 and EPSG:3857

Question: If a user does not have a polygon with zones he/she cannot compute zonal statistics

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