Geos2161 Exam - Multiple Choice

Front 1

Raster cell value

Back 1

Can be text

Front 2

Which of the following is an example of non-spatial data?

Back 2

Population

Front 3

Which of the following is not an example of spatial data?

Back 3

Time

Front 4

A network is:

Back 4

A system of linear features connected at intersections and interchanges

Front 5

In the latitude and longitude coordinate system, longitude is measured as the horizontal angle from the Greenwich (or prime) meridian, while latitude is measured as the vertical angle from the:

Back 5

Equator

Front 6

In the world of GIS, another term for the property of connectivity is:

Back 6

Proximity

Front 7

Requirements for all GIS data include:

Back 7

A spatial component and an attribute component

Front 8

When talking about scaled maps, R.F. refers to:

Back 8

Representative Fraction

Front 9

A large scale map:

Back 9

Has a large R.F. and shows a small area

Hint 9

A large amount of confusion is caused by the two terms "large scale" and "small scale". "Large scale" refers to maps on which objects are relatively large, "small scale" to maps on which objects are relatively small. Large scale and small scale are subjective terms. For example a town planner who is used to working with plans at 1:1000, may consider 1:25 000 a small scale map, while an atlas compiler commonly working with maps of scales 1:5 000 000 would consider 1:25 000 a large scale map.

Front 10

Which of the following data structures has these characteristics: lines and areas are built from points joined in order; lines have a direction to the ordering of the points; polygons are built from points or lines; and information is stored about topology:

Back 10

Complex vector

Front 11

Gridding algorithms are used for:

Back 11

Interpolating data values in between known values of a raster grid

Front 12

Which type of map shows an imaginary surface which is subdivided by lines of equal value and is used to represent smoothly continuous data?

Back 12

Isopleth map

Front 13

13. You need to find the scale of a map you've been given for a class project. In order to do so, you decide to measure a distance between two real world features and relate that to the distance shown on the map. You find that the actual distance between two buildings is 500 metres. On the map that same distance is 2 centimetres. What is the scale of the map?

Back 13

1:25000

Front 14

You need to find the scale of a map you've been given for a class project. In order to do so, you decide to measure a distance between two real world features and relate that to the distance shown on the map. You find that the actual distance between two buildings is 50 metres. On the map that same distance is 2 centimetres. What is the scale of the map?

Back 14

1:2500

Front 15

To compare, overlay, or cross analyse two maps in a GIS:

Back 15

Both maps must be at the same equivalent scale

Hint 15

Bear in mind, also:

Both maps must be in the same map projection.

Both maps must be at the same equivalent scale.

Both maps must be on the same coordinate system.

Front 16

In MapInfo, I have created a Map and a Layout and inserted a Scale Bar and North Arrow. However, I have put them in the wrong place and want to delete them and start again. I select the Scale Bar in my Map Window and press delete but nothing happens. What is the problem?

Back 16

The cosmetic layer is not editable

Front 17

Back 17

1

Front 18

Colour, as used in GIS:

Back 18

Consists of hue, value and chroma

Front 19

A characteristic of UTM projection is that distortion of scale, distance, direction and area increases away from the:

Back 19

Central meridian

Front 20

Which one of the following features MUST by definition be included with a GIS?

Back 20

A method for data storage, retrieval, and representation

Front 21

Which technique can be used for gridding data?

Back 21

Triangulation

Front 22

Meta-data would NOT include information about:

Back 22

Data frequency

Front 23

A typical Boolean operator is:

Back 23

OR

Hint 23

Others:

AND, NOT

Front 24

The topological relationship between these two polygons can be best described in terms of:

Back 24

Adjacency: objects sharing a common boundary

Hint 24

Others:

Containment: objects contained within another object
Connectivity: describes linkages between line featuresy

Front 25

Which one of the below examples is not a thematic map used in GIS:

Back 25

Digital elevation model

Hint 25

Thematic Map types:

Dot Maps
Choropleth Maps
Proportional Symbol Maps
Dasymetric Maps
Flow Maps

Front 26

GIS data structure can be in what form:

Back 26

Vector

Hint 26

GIS Data Structures:

Raster

Vector

Front 27

The best way to determine what layers you have open in MapInfo is to:

Back 27

Use layer control

Front 28

Real numbers are:

Back 28

Decimal numbers

Front 29

Raster and vector data:

Back 29

Can be used together if correctly georeferenced

Front 30

If the straight line distance between two towns on a map is 15cm and the scale is 1:20000, what is the distance in kilometres between the two towns?

Back 30

3km

Front 31

The Buffer tool in MapInfo:

Back 31

Creates a polygon that surrounds a point, line or polygon in the cosmetic layer

Front 32

A spectral reflectance curve describes the reflection response of a particular object to a range of energy wavelengths (T or F)

Back 32

T

Front 33

An atmospheric window is:

Back 33

A portion of the electromagnetic spectrum whose energy is transmitted through the atmosphere

Front 34

Spectral reflectance curves describe the width of wavebands for a given sensing device (T or F)

Back 34

F

Hint 34

A spectral reflectance curve describes the reflection response of a particular object to a range of energy wavelengths

Front 35

Turbid water reflects more near-IR energy than clear water (T or F)

Back 35

T

Hint 35

Increase in turbidity = Increase in Reflection

Front 36

Clear water is more efficient at absorbing blue light than infrared light (T or F)

Back 36

F

Hint 36

Water is blue?

Front 37

Geometric errors result from:

Back 37

Skew caused by Earth rotation effects
Scanning system–induced variation in ground resolution cell size
Scanning system one-dimensional relief displacement
Scanning system tangential scale distortion

Hint 37

Variations in satellite attitude and altitude
Satellite velocity changes
Optical configuration and geometry of the sensing device
Effects of Earth’s curvature

Front 38

Scale on an aerial photograph is constant, irrespective of terrain elevation (T or F)

Back 38

F

Hint 38

Scale varies, depending on terrain elevation

Front 39

Radar remote sensing is confined principally to the microwave part of the EM spectrum (T or F)

Back 39

F

Front 40

Unsupervised image classification:

Back 40

Uses natural spectral clusters to discriminate between land cover types

Hint 40

Algorithms are used to divide pixels into a number of classes
based on natural groupings present in the image values

Front 41

The property of radial distortion in aerial photographs can be used for determining:

Back 41

the height of objects

Front 42

A vertical aerial photograph always has the geometric integrity of a paper map (T or F)

Back 42

F

Front 43

A training site is:

Back 43

An area on an image whose land cover type is known

Front 44

Geometric errors occur when pixel values fail to represent the true reflectance or emission properties of objects (T or F)

Back 44

F

Hint 44

Radiometric errors occur when pixel values fail to represent the true reflectance or emission properties of objects

Front 45

Circle the statement below which is TRUE:
a) Contrast stretching is used to remove geometric errors from raw image data
b) Satellites that make frequent passes (e.g. daily) over a part of the globe usually generate images that have the best spatial resolution
c) 'Lidar' can only be used in daylight because it relies on solar radiation as the energy source
d) Radar generates its own energy and uses the speed of light to determine distances between the energy source and targets

Back 45

Radar generates its own energy and uses the speed of light to determine distances between the energy source and targets