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Q1.
Geospatial data are locational data that use a real-world referencing
system.
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Q2.
Latitude and longitude referenced data are
projected data.
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Q3.Geographical
Information Systems combine mapping, analysis and
data management functions.
data management functions.
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Q4.
The Earth is a perfect sphere.
Q5.
Latitude is expressed in terms of degrees north
or south of the equator.
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Q6.
The raster data model
is related to a field-based view of the world.
Q7.
The vector data model
uses spatial entities to represent real-world features in an otherwise
empty space.
Q8. Digitizing
is the process of mapping x and y coordinates from a database file.
Q9.
Aerial photography and satellite imagery are both forms of analogue raster
data.
Q10.
Of all the satellite sensors currently
available, the Advanced Very High Resolution Radiometer produces images
with the highest spatial resolution.
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Q11.
Spatial resolution of an image is equivalent to pixel size.
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Q12.
The Global Positioning System was originally
developed as a means of collecting spatial data for Geographical Information
Systems.
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Q13. Spatial
analysis functions within Geographical Information Systems include
buffering and overlay.
buffering and overlay.
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Q14.
All satellites orbiting the Earth provide
data that can be used for land-cover
change detection.
change detection.
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Q15. Satellite
sensors only pick up light that is reflected from the Earth’s surface.
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© copyright Hodder Arnold 2004
