Section: Raster
Answers to section modules.

Question: Georeferencing flows us to


Question: Do neighbourhood operations work on single rasters only
Answer: No


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


Question: A Raster is


Question: Styling a raster entails


Question: Raster pixels range from 1 - 255 only


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


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


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


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


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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