Definitions Flashcards
(113 cards)
1
Q
The determination of the water depth at a certain fixed point.
A
Sounding
2
Q
Method of surveying wherein the lengths of the triangle sides are measured, usually by electronic methods, and the large angles are computed from the measured lengths
A
Trilateration
3
Q
Color used to emphasize important roads and public subdivision lines
A
Red
4
Q
Top or roof of an underground opening
A
Back
5
Q
Any map representing large countries and continents in a small scale
A
Chorographic map
6
Q
A small circle of constant altitude parallel to the horizon is called
A
Almucantar or Parallel of Altitude
7
Q
Which grid system considers the portion of the earth between two selected parallels of latitude to be a horizontal slice of cone?
A
Orthomorphic
8
Q
Area from the last crosscut to the face
A
Room
9
Q
Map scles having sclaes of 1:2000 or larger and with contour intervals ranging from 0.1 to 2 meters
A
Large Scale maps
10
Q
The azimuth used in the cadastral projects shall be known as
A
Grid Azimuth
11
Q
Pinpoint or crosses on the four sides of the map by which color separation drawings are adjusted to each other
A
Register marks
12
Q
The points which the sky appears to rotate is called
A
Celestial pole
13
Q
Indicate the height or elevation of the land above sea level
A
Contour lines
14
Q
Wall of an entry
A
Rib
15
Q
These are made by stereoscopic means as seeing in three dimensions
A
Stereometric maps
16
Q
A piece of weight usually solid metal used to fix the sounding line in a vertical position
A
Smooth lead
17
Q
Horizontal or nearly horizontal in or into an ore opening
A
Drift
18
Q
The magnitude of scale error for an area mapped by the Lambert Conformal Projection is fixed by the
A
North and South limitation chosen
19
Q
It shows land or submarine bottom relief represented a s contours of hachures
A
Hypsometric Maps
20
Q
Color used as a tint to portray built-up urban areas and the area coverage of large cities.
A
Pink
21
Q
These are made by stereoscopic means as seeing in three dimensions
A
Stereometric maps
22
Q
Circle on the surface of the earth with the radius of the world. Appears as straight line on the map
A
Great Circle
23
Q
Also called as Great Circles
A
Orthodromes
24
Q
Which of the map projections required a separate computation and a map for each city or base upon which the map is centered.
A
Azimuthal equidistant
25
Shortest distance between two points on the globe
## Footnote
Shortest distance between two points on different meridians
Great circles or orthodromes
26
A spiral curve that has constant bearing and cross all meridians at the same angle
Loxodromes or Rhumb lines
27
Used to locate wrecks, rocks, and other navigational hazards.
Wire drag
28
A map projection showing each parallel of latitude as the arc of the circle whose radius is equal to the lengths of the tangent extending from the parallel to a point of intersection with the earth's axis
Polyconic
29
Which grid has the most suitable projection for over-all coverage?
Transverse Mercator
30
Line of constant compass direction. Line of constant orientation.
Rhumb lines / loxodromic lines
31
A great circle that passes through poles
Meridian
32
A full headed and full feathered arrow represents
True meridian
33
Degrees of rotation east or west of the prime meridian.
Longitude
34
Line joining points on the earth's surface having equal magnetic declination as of a given date.
Isogonic Lines
35
Passes through Greenwich, England
Prime Meridian
36
Office plots of all field data gathered during the survey. These sheets represent the data after all corrections have been applied.
Smooth sheet
37
Line of 0° longitude
Prime Meridian
38
Office plots of all field date gathered during the survey. These sheets represent the data after all corrections have been applied.
Smooth sheet
39
Line of 0° latitude
Equator
40
Line joining points on the earth's surface having equal magnetic declination as of a given date.
Isogonic lines
41
Degrees of rotation of a point north or south of the equator and along the meridian.
Latitude
42
The point which the sky appears to rotate in a counterclockwise direction is called
North celestial pole
43
Lines of constant latitude
Parallels
44
Circles of latitude on the globe
Parallels
45
Top of the room or entry
Roof
46
Relationship where distance between any two points on the map bears a corresponding distance on the ground
Scale
47
Scale that uses two different linear measurement
Equivalence / Verbal scale
48
Scale expressed as dimensionless ratio, meaning a unit length on the map is equivalent to the same unit of different length on the ground
Representative Fraction
49
Scale that uses horizontal line with tick marks for corresponding ground distance
Graphical Scale
50
Map that covers large areas
Small scale map
51
Scale of usually 1:10,000 or smaller
small scale
52
Map that covers small areas
Large scale map
53
Scale of usually 1:2,000 or larger
Large scale map
54
Scale of usually 1: 2,000 to 1:10,000
Medium scale
55
Engraving lines, symbols and windows in a scribe coating usually used in the preparation of negative for map production
Scribing
56
Coordinates that represents angles of rotation of the Earth's radius along the equator and meridian
Geographic coordinates
57
A constellation of satellites that triangulate or determine the position and velocity of any receiver on or above the Earth.
Global Positioning System
58
A mathematical transformation for creating flat maps in rectangular or plane coordinates (northings and eastings) from geographic coordinates (latitude and longitude)
Map Projection
59
Representation of a 3D surface of the Earth on a 2D plane
Map Projections
60
The projection when a cone or cylinder is rotated 90°.
Transverse Projection
61
A projection in which the projection surface is rotated so that its central axis is running east-west, as opposed to the usual north-south.
Transverse Projection
62
The projection when a cone or cylinder pierce through and reemerge through the surface of the earth.
Secant Projection
63
Loxodromes or rhumb lines appear as straight line in this projection.
Conformal Projection
64
Projection that distort areas and size of features but preserves shape and direction (angle)
Conformal Projections
65
Projections that distort shape, angle and direction but preserve areas and size of features.
Equal area or Equivalent projection
66
Projection that presents true direction from the makers center point of choice.
Azimuthal Projection
67
Cylindrical conformal projection wherein loxodromes or rhumb lines appear as straight line.
Mercator
68
Projection that cuts at parallel 45 N and 45 S, the two standard parallel.
Gall Projection
69
Projection that resembles a Mercator but minimize distortion at higher or northern latitudes.
Miller Projection
70
Conic projection whose parallels are closer near the northern and southern edges.
Albers Equal Area projection
71
Conic Projection whose central parallels are closer.
Lambert Conformal Projection
72
Conic projection where parallels are equally spaced.
Equidistant conic projection
73
Also known as Planar or Zenithal Projection.
Azimuthal Projection
74
The only azimuthal conformal projection
Stereographic projection
75
Projection where light source is from the center
Gnomonic Projection
76
Map projection from infinity.
Orthographic Projection
77
Projected or viewed from the opposite side of the globe.
Stereographic Projection
78
Resembles a cylindrical projection but use curve lines instead of straight line for meridians and parallels.
Pseudo cylindrical Projection
79
Projection where meridians are sine curves
Sinusoidal projection
80
Projection where meridians (except the central meridian) are semi ellipse.
Mollweide Projection
81
These are maps that are neither conformal nor equal area.
Aphylactic maps
82
Maps that preserves enough of area, shape, distance and direction so that the earth looks right but it preserves none of them.
Compromise maps
83
Maps that preserves more than one property.
Combines Projection
84
The Best Map projection that uses tetrahedron, a solid with 4 faces.
Authagraph
85
Projection that uses icosahedron, a solid with 20 faces or 20 equilateral triangle face.
Dymaxion or Fuller Projection
86
These are circles at grid intersection to show how they vary to distortion from projection.
Tissot's Indicatrix
87
Map that shows value or properties in the form of diagrams (or thru the use of symbols) on top of a simplified topographic map
Cartograms or Diagrams
88
The study of maps, charts, globes and relief models.
Cartography
89
Maps used for navigation in air or in water.
Chart
90
A drawing of a three-dimensional body related to three axes. The dimensions parallel to the axes are to scale. One of the axes is usually vertical.
Isometric Diagram
91
Maps that employ lines or colors to identify places with comparable regional characteristics.
Isopleths Map
## Footnote
Isopleths map, It simplifies information about a region by showing areas with continuous distribution.
Chloropleths map displays divided geographical areas and it rely on boundaries.
92
Lines or curves drawn on a map through all points of equal values.
Isopleths
93
Statistical thematic maps that uses pseudocolors to display different values that applies to a country, a region or any geographical location.
Choropleths map
94
Map showing the boundaries and subdivisions of a tract of land determine by surveying.
Planimetric Map
95
A representation of the earth's surface in two horizontal dimensions only. They are useful in indicating locations, horizontal distances, and in finding directions, but it is of no value to a user whose primary concern is with the topographis or relief features of the land.
Planimetric map
96
Inclined opening driven to the ore deposits.
Slope
97
A representation of the earth's surface in three dimensions. It shows the same features as a planimetric map and in addition indicates relief, usually by means of contours which is its distinguishing characteristics.
Topographic maps
98
Which map projection has distances correct on the central meridian but the east and west extremities are distorted?
Transverse Mercator
99
Vertical or sloped opening in or into a mine used for haulway ventilation or for access.
Shaft
100
Intersection of an ore body and the earth's surface
Cropline
101
It is the shortest distance between points on the earth's surface which crosses successive meridians at different angles; thus its azimuths varies from point to point.
Orthodromes
102
Relatively permanent material object, natural or artificial, bearing a marked point whose elevation above or below an adopted datum is known.
Bench mark
103
The process of detecting or monitoring chemical or physical properties of an area by measuring its reflected and emitted radiation.
Remote sensing
104
An opening usually horizontal, drivem from the surface to a working area of a mine.
Adit
105
It is related to the measurement of ocean or other water depths.
Bathymetry
106
Block of ore/ rock between the entry and the crosscut used to support the overburden.
Pillar
107
Line joining points on the earth's surface having equal magnetic declination as of a given date.
Isogonic lines
108
Used to locate wrecks, rocks and other navigationa hazards.
Wire drag
109
Which one of the projections requires a separate computation and a map for each city or base upon which the map is centered.
Azimuthal equidistant
110
111
112
113
