What is a GIS and what are some of its uses?
What will be an ideal response?
Answer: A Geographic Information System is a computer- based system that not only captures and stores information, but also is able to execute queries, do analysis, and displays geographic data. Geographic Information Systems can be used to produce maps that are more accurate and attractive than those drawn by hand. With GIS, the position of any object on Earth can be measured and recorded with mathematical precision and then stored in a computer. A map can be created by asking the computer to retrieve a number of stored objects and combine them to form an image, with each information type stored as a layer.
There are many uses to which GIS can be put. GIS enables geographers to calculate whether relationships between objects on a map are significant or merely coincidental. Layers can be compared to show relationships among different kinds of information. To protect hillsides from development, for example, a geographer may wish to compare a layer of recently built houses with a layer of steep slopes.
You might also like to view...
Geologically inactive regions located some distance from plate boundaries
Which of the following describes the apparent change in the average global temperatures over the past 100 years or so?
A. They have increased slightly. B. They have fluctuated widely but shown no overall change. C. They have decreased slightly. D. They have remained constant.
Ash produced by solid waste incinerators typically contains a higher concentration of toxic material than unburned garbage.
Answer the following statement true (T) or false (F)
The multiple channels flowing out from the main stream on a delta are called _______________
Fill in the blank(s) with correct word