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45 Cards in this Set
- Front
- Back
- 3rd side (hint)
Raster cell value |
Can be text |
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Which of the following is an example of non-spatial data? |
Population |
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Which of the following is not an example of spatial data? |
Time |
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A network is: |
A system of linear features connected at intersections and interchanges |
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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: |
Equator |
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In the world of GIS, another term for the property of connectivity is: |
Proximity |
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Requirements for all GIS data include: |
A spatial component and an attribute component |
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When talking about scaled maps, R.F. refers to: |
Representative Fraction |
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A large scale map: |
Has a large R.F. and shows a small area |
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. |
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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: |
Complex vector |
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Gridding algorithms are used for: |
Interpolating data values in between known values of a raster grid |
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Which type of map shows an imaginary surface which is subdivided by lines of equal value and is used to represent smoothly continuous data? |
Isopleth map |
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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? |
1:25000 |
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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? |
1:2500 |
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To compare, overlay, or cross analyse two maps in a GIS: |
Both maps must be at the same equivalent scale |
Bear in mind, also:
Both maps must be in the same map projection.
Both maps must be at the same equivalent scale.
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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?
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The cosmetic layer is not editable |
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1 |
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Colour, as used in GIS: |
Consists of hue, value and chroma |
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A characteristic of UTM projection is that distortion of scale, distance, direction and area increases away from the: |
Central meridian |
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Which one of the following features MUST by definition be included with a GIS? |
A method for data storage, retrieval, and representation |
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Which technique can be used for gridding data? |
Triangulation |
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Meta-data would NOT include information about: |
Data frequency |
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A typical Boolean operator is: |
OR |
Others: AND, NOT |
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The topological relationship between these two polygons can be best described in terms of: |
Adjacency: objects sharing a common boundary |
Others: Containment: objects contained within another object |
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Which one of the below examples is not a thematic map used in GIS: |
Digital elevation model |
Thematic Map types: Dot Maps |
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GIS data structure can be in what form: |
Vector |
GIS Data Structures: Raster Vector |
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The best way to determine what layers you have open in MapInfo is to: |
Use layer control |
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Real numbers are: |
Decimal numbers |
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Raster and vector data: |
Can be used together if correctly georeferenced |
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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? |
3km |
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The Buffer tool in MapInfo: |
Creates a polygon that surrounds a point, line or polygon in the cosmetic layer |
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A spectral reflectance curve describes the reflection response of a particular object to a range of energy wavelengths (T or F) |
T |
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An atmospheric window is: |
A portion of the electromagnetic spectrum whose energy is transmitted through the atmosphere |
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Spectral reflectance curves describe the width of wavebands for a given sensing device (T or F) |
F |
A spectral reflectance curve describes the reflection response of a particular object to a range of energy wavelengths |
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Turbid water reflects more near-IR energy than clear water (T or F) |
T |
Increase in turbidity = Increase in Reflection |
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Clear water is more efficient at absorbing blue light than infrared light (T or F) |
F |
Water is blue? |
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Geometric errors result from: |
Skew caused by Earth rotation effects |
Variations in satellite attitude and altitude
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Scale on an aerial photograph is constant, irrespective of terrain elevation (T or F) |
F |
Scale varies, depending on terrain elevation |
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Radar remote sensing is confined principally to the microwave part of the EM spectrum (T or F) |
F |
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Unsupervised image classification: |
Uses natural spectral clusters to discriminate between land cover types |
Algorithms are used to divide pixels into a number of classes |
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The property of radial distortion in aerial photographs can be used for determining: |
the height of objects |
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A vertical aerial photograph always has the geometric integrity of a paper map (T or F) |
F |
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A training site is: |
An area on an image whose land cover type is known |
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Geometric errors occur when pixel values fail to represent the true reflectance or emission properties of objects (T or F) |
F |
Radiometric errors occur when pixel values fail to represent the true reflectance or emission properties of objects |
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Circle the statement below which is TRUE: |
Radar generates its own energy and uses the speed of light to determine distances between the energy source and targets |
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