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GIS > Chap 5 > Flashcards

Chap 5 Flashcards

1
Q

node

A

the beginning or end x-y pair of a line feature

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2
Q

vertex

A

(vertices) a point at which the segments of a line or polygon feature change direction

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3
Q

feature class

A

a set of similar objects with the same attributes stored together in a spatial data file

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4
Q

attributes

A

information about map features stored in columns of a table

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5
Q

Feature ID (FID)

A

a unique number assigned to every feature in a spatial data file and used for identification and tracking

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6
Q

object ID (OID)

A

unique number identifying a row in a table or a feature in a geodatabase feature class

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7
Q

multipart feature

A

a single feature composed of nontouching units, such as a single state feature composed of the seven Hawaiian islands

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8
Q

feature dataset

A

a set of feature classes in a geodatabase that share a common coordinate system and can participate in networks and topology

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9
Q

spaghetti model

A

a model that stores spatial features as a series of x-y coordinates and does not store topological relationships between features

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10
Q

topological model

A

a data model that stores spatial relationships between features in addition to their x-y coordinates

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11
Q

adjacency

A

a spatial condition that quantifies whether one feature touches another

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12
Q

connectivity

A

a property of linear features when they are connected to each other via junctions

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13
Q

overlap

A

a spatial condition that quantifies whether one feature covers all of part of another feature

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14
Q

intersection

A

the property of two features touching each other in whole or in part

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15
Q

zipped

A

refers to a set of files that have been compiled into a single file and compressed in order to make file transfers and downloads easier

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16
Q

event layer

A

a map layer of points created from a series of coordinate pairs in a table

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16
Q

event layer

A

a map layer of points created from a series of coordinate pairs in a table

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17
Q

merge (2)

A

1) to combine two or more map features into one feature
2) to combine two or more data layers into a single layer

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18
Q

append

A

a function that combines features from two different feature classes

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19
Q

dissolve

A

to combine features when they share the same value for an attribute

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20
Q

feature dataset

A

a set of feature classes in a geodatabase that share a common coordinate system and can participate in networks and topology

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21
Q

shapefile

A

the spatial data model developed for, and used by, ArcView 3 and later versions

22
Q

dBase

A

a database program whose file format has been adopted for the shapefile data model and tables in ArcGIS

23
Q

Interchange file

A

a file used to store a coverage for file transfer; has an extension of .e00

24
Q

source data (2)

A

1) a spatial data file that provides the features for a map layer
2) the original information used to develop a spatial data set

25
Q

path or pathname

A

a list of the folders that must be traversed to locate a particular file

26
Q

absolute pathname

A

a file pathname that starts at the drive letter

27
Q

relative pathname

A

path to a file that starts in the current folder

28
Q

Environment settings

A

program-level or tool-level settings that affect how tools run or set characteristics of the output, such as cell size or coordinate system

29
Q

1- connectivity
2- intersection
3- adjacency
4- overlap

a- the united states and mexico
b- an oil well to a pipeline
c- Pennington County in New Jersey
d- hunting ranges of two nearby mountain lions

A

1-b
2-d
3-a
4-c

30
Q

1- credits
2- appropriate scale range
3- description
4- summary
5- tags
6- use limitation

a- describes who may use the data and for what purpose
b- suggests the scales at which the data are valid
c- brief information about the purpose of the data
d- a potentially expanded explanation of the contents and history of the dataset
e- words or phrases that help users search for the data in a data repository or clearinghouse
f- information recording where the data came from and who was responsible for it

A

1-f
2-b
3-d
4-c
5-e
6-a

31
Q

1- feature classes
2- shapefiles
3- feature datasets
4- rasters
5- coverages

a- Contain pixels rather than points, lines, or polygons
b-Found inside a geodatabase and may contain only one type of geometry (points, lines, or polygons)
c- Spaghetti data model developed for the early version of ArcView, still in common use
d- Is the oldest format and is generally converted to a newer one for use
e- Found inside a geodatabase and may contain multiple datasets with points, lines, and polygons

A

1-b
2-c
3-e
4-a
5-d

32
Q

On Windows computers, why should GIS data be stored on the main C:\ drive rather than the default user library folder or Desktop?

a- Because the software does not always work correctly when accessing data under the Library folders or on the Windows Desktop.
b- Because the Library folders and Windows Desktop permit spaces in filenames and the C:\ drive does not.
c- Because there is more room on the C:\ drive.
d- Because on a network, the Library folders can get mixed up between different users.

A

a- Because the software does not always work correctly when accessing data under the Library folders or on the windows Desktop

33
Q

Which ONE of the following statements best describes the use of spaces in folder and file names in ArcGIS?

a- Using spaces in folder names in ArcGIS is permitted and encouraged.
b- Using spaces in folder names in ArcGIS is not permitted, but they can be used in map document names.
c- Using spaces in folder names in ArcGIS is permitted but strongly discouraged.
d- Using spaces in folder names in ArcGIS is permitted, and they can also be used in names of datasets.

A

c- using spaces in folder names in ArcGIS is permitted but strongly discouraged

34
Q

A table of climate stations containing longitude and latitude values has a corresponding coordinate system that is _____________.

a- geographic
b- state plane
c- UTM
d- conic

A

a- geographic

35
Q

The Environment settings are used to _____________.

a- modify the behavior and output of tool functions
b- manage the installation properties of ArcGIS Pro and ArcCatalog
c- control the color options available when displaying features
d- control the placement of menus and toolbars in the program window

A

a- modify the behavior and output of tool functions

36
Q

You download a file with a .zip extension, but then cannot find it in the Catalog window in ArcGIS Pro. What do you need to do?

a- Download the file using a different browser.
b- Use the ArcCatalog program instead of the Catalog window in ArcGIS Pro.
c- Use a utility to extract the contents of the .zip file to a folder.
d- Download the file again because it did not transfer correctly.

A

c- use a utility to extract the contents of the .zip file to a folder

37
Q

Which one of the following is NOT a characteristic of file geodatabases?

a- They can store up to 1 terabyte of information.
b- They are designed for large workgroups with many editors.
c- They can be accessed by different operating systems.
d- They are stored as GIS files in standard system folders.

A

b- they are designed for large workgroups with many editors

38
Q

Which one of the following describes an advantage of shapefiles over geodatabases?

a- Shapefiles can be read by many different GIS programs and are now commonly used to share data.
b- Shapefiles offer automatic tracking and updating of geometry attributes such as polygon areas or line lengths.
c- Shapefiles can utilize topology rules for finding and fixing topology errors.
d- Shapefiles can incorporate subtypes and domains for advanced functionality.

A

a- shapefiles can be read by many different GIS programs and are now commonly used to share data

39
Q

Feature classes in a feature dataset must ____________.

a- all have the same geometry type
b- all have the same coordinate system
c- all participate in a planar topology
d- all have the same prefix in the feature class name

A

b- all have the same coordinate system

40
Q

Which one of the following is NOT a characteristic of personal geodatabases?

a- They are designed for use by individuals or small workgroups.
b- They are based on the Microsoft Access database engine.
c- The file size is limited to 2 GB.
d- They can be used by Mac, Linux, and Unix operating systems.

A

d- they can be used by Mac, Linux, and Unix operating systems

41
Q

definition of the term “vertex”

a-stored x-y location; a group of them defines the shape of a line or polygon
b- a single array of values stored in a raster, which may store one array or many
c- the beginning and endpoint of a line feature
d- a square data element in a raster holding one value for the map

A

a- stored x-y location; a group of them defines the shape of a line or polygon

42
Q

definition of the term “feature dataset”

a- a set of similar spatial objects with the same attributes stored together in a data file
b- a map view holding layers that are viewed and analyzed together
c- an organized subset of feature classes in a geodatabase
d- an Internet map layer in which the actual features are accessible

A

c- an organized subset of feature classes in a geodatabase

43
Q

definition of the term “dissolve”

a- combines features together when they share the same value for an attribute
b- overlays two spatial data layers; keeps overlapping areas and discards unique areas
c- overlays two spatial data layers; keeps both overlapping and unique areas
d- combines one or more different feature classes into an existing feature class

A

a- combines features together when they share the same value for an attribute

44
Q

definition of the term “merge”

a- overlays two spatial data layers; keeps overlapping areas and discards unique areas
b- combines two or more map features (or datasets) into one new feature (or dataset)
c- overlays two spatial data layers; keeps both overlapping and unique areas
d- combines features together when they share the same value for an attribute

A

b- combines two or more map features (or datasets) into one new feature (or dataset)

45
Q

definition of the term “coverage”

a- an organized subset of feature classes in a geodatabase
b- a file that points to spatial data and stores how to display it
c- an old spatial data format created for, and used by, ArcInfo
d- format developed for ArcView that stores a feature class outside a geodatabase

A

c- an old spatial data format created for, and used by, ArcInfo

46
Q

When importing data for your home state, the Clip tool would most likely be needed to extract ____________.

a-counties
b- zip codes
c- cities
d- rivers

A

d- rivers

47
Q

Creating a formal citation in the Credits section of the metadata is a good idea because

a- it helps you find the dataset again if you need it.
b- it helps other users know where the data came from.
c- it is convenient when you need to cite the data on a map or in a report.
d- these are all good reasons to do it.

A

d- these are all good reasons to do it.

48
Q

Which ONE of the following statements uses its terms correctly?

a- The layer file for that geology feature class stores the correct colors for each unit.
b- That feature class, containing geologic rock units for the Black Hills, has 5000 pixels.
c- That geodatabase contains 10 layers used to create a geologic map.
d- I changed the symbol properties of the feature class to show the correct colors for each geologic unit.

A

a- The layer file for that geology feature class stores that correct colors for each unit.

49
Q

A red exclamation point next to a layer name indicates that _____________.

a- the layer is very important
b- the layer needs editing
c- the data for the layer can’t be found
d- the layer comes from a different folder than the map document
e- none of the responses listed

A

c- the data for the layer can’t be found

50
Q

The path “..\mgisdata\usa\usdata\states” is an example of a(n) ___________ pathname.

a- relative
b- absolute
c- arbitrary
d- none of the responses listed

A

a- relative

51
Q

A closed figure composed of x-y coordinate vertices is called a ____________.

a- polygon
b- feature class
c- node
d- line
e- point

A

a- polygon

52
Q

The endpoint of a line is called a ____________.

a- node
b- vertex
c- point
d- cell
e- pixel

A

a- node

53
Q

Select the example that best characterizes the term “multipart feature”.

a- A feature with multiple records and one polygon.
b- A feature with multiple pixels stored together.
c- A feature with multiple polygons in one record.
d- A feature that appears multiple times in different feature classes.

A

c- A feature with multiple polygons in one record.

GIS (5 decks)

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