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GIS Midterm
Geographical Information Systems
37
Geography
Undergraduate 4
02/26/2013

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Cards

Term
Angle =
Definition
Arc length/radians
Term
turn radians into degrees
Definition
degrees *pi/180
Term
turn degrees into radians
Definition
radians *180/pi
Term
60 arc min=
Definition
1 degree
Term
60 arc sec=
Definition
1 arc min
Term
arc min=
Definition
arc sec/60
Term
where is the latitude=0
and what is latitude measured in?
Definition
equator
north/south degrees
Term
How many times zones are there and
how many degrees and hours between each
zone?
Definition
24 time zones
15 degrees and 1 hour
Term
where is the longitude=0 and
what is longitude measured in?
Definition
prime meridian
east west degrees
Term
how many satellites are there and how many in use?
Definition
28 total, 24 in use at each times
Term
How many satellites do you need to connect to?
Definition
4, 3 for position, 1 for time.
Term
What time zone is Culver in?
Definition
15
Term
what datum do you use in GPS?
Definition
World Geodetic System 1984 datum
Term
What is a Geoid map projection?
Definition
the actual shape of the earth
Term
What is a Spheroid map projection?
Definition
the radius is greater at the equator, more realistic
Term
1 degree of latitude=
Definition
69 mi or 111km
Term
1 degree of longitude=
Definition
111Cos(latitude) km
69Cos(latitude) mi
Term
where is a conic projection best at?
Definition
mid latitudes
Term
where is a mercator projection best at?
and what kind of projection is it?
Definition
the equator
and cylidrical
Term
what is a common length of topo maps?
Definition
15 and 7.5 minute
Term
What is azimuth measuring?
Definition
the angle measured clockwise from north
Term
What is quadrant bearing?
Definition
the angle measured east or west of north/south
Term
What is a Database?
Definition
collection of files where info is stored
Term
what does sql stand for
Definition
Structured Query Language
Term
how to type in SQL
Definition
Select-fieldname, fieldname,…
From-table name
Where- fieldname> value…
Term
what does ArcMap do?
Definition
displays the map
Term
what does ArcCatalog do?
Definition
displays the database
Term
How is a Raster feature displayed?
Definition
IMG file or pixels
Term
what is a vector feature and how is it displayed?
Definition
Points, lines, and polygons
mathematical coordinates
Term
what is the table of contents?
Definition
where the feature layers are
Term
what is the main menu toolbar?
Definition
where file, view, selection tabs are
Term
what is the standard toolbar?
Definition
pan, zoom, full extent etc
Term
How do you get an attribute table?
Definition
right click the layer and click attribute table
Term
how do you display layer properties?
Definition
right click layer and click properties
Term
how do you change from data and layout view?
Definition
on the view drop down menu
Term
how do you get a definition query?
Definition
go to properties, go over to the definition query tab and use query builder
Term
what do geodatabases show?
Definition
lat lines, long lines, easting and northing
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