Terms Flashcards
1
Q
The science of measurement, configuration, and mapping of bodies of water with special consideration for their use in navigation
A
Hydrography
2
Q
A chart containing information regarding the characteristics and topography of the underlying water bed which are primarily important to underwater surveying works and navigation.
A
Hydrographic Chart
3
Q
Office plots of all field data gathered during the survey. These sheets represent the data after all corrections have been applied.
A
Smooth sheet
4
Q
The rise and fall of water surface due to the gravitational attraction of the sun and the moon on the earth.
A
Tide
5
Q
It refers to the maximum height of water above the reference plane during a given period.
A
High tide
6
Q
It refers to the current flow direction.
A
Set
7
Q
It refers to the lowest possible height of the water surface below the reference plane during a given period.
A
Low tide
8
Q
The period within which the water surface is moving ashore.
A
Flood tide
9
Q
The period within which the water surface subsides and flows back to the sea.
A
Ebb tide
10
Q
Office plots of all field data gathered during the survey. These sheets represent the data after all corrections have been applied.
A
Smooth sheet
11
Q
Which map projection has distances correct on the central meridian but the east and west extremities are distorted?
A
Transverse Mercator
12
Q
A map projection showing each parallel of latitude as the arc of the circle whose radius is equal to the length of the tangent extending from the parallel to a point of intersection with the earth’s axis?
A
Polyconic
13
Q
The projection least suited for general use in an office and giving very inaccurate information as to relative size of areas in widely different latitudes.
A
Mercator
14
Q
The determination of the water depth at a certain fixed point.
A
Sounding
15
Q
A piece of weight usually solid metal used to fix the sounding line in a vertical position.
A
Smooth Lead
16
Q
A wire or a rope across the river attached to the two poles at the river banks and used hold the boat in place.
A
Stay line
17
Q
An instant in which the tidal current is changing its direction and flows neither in or out.
A
Slack water
18
Q
It refers to the speed of the current flow.
A
Drift
19
Q
The art of making measurements of the flow of water in open channels
A
Stream Gaging
20
Q
The selected site on a stream which is occupied and operated so as to furnish the basic data from which systematic records of discharge can be derived.
A
Gaging station
21
Q
Used to locate wrecks, rocks, and other navigational hazards.
A
Wire drag
22
Q
Undesired minerals associated with ore.
A
Gangue
23
Q
The transverse Mercator is best suited for locations
A
having predominant North-South Length
24
Q
The Lambert Conformal Projection is (according to method of construction)
A
Conic
25
The magnitude of scale error for an area mapped by a Lambert Conformal Projection is fixed by the:
North and South limitation chosen
26
On a globe, rhumb line is a
Spiral
27
The area to be mapped must be small, and long and narrow, with the long axis in the direction of a meridian or parallel, when using
British Grid
28
Which grid has the most suitable projection for over-all coverage?
Transverse Mercator
29
Which grid system considers the portion of the earth between two selected parallels of latitude to be a horizontal slice of cone?
Orthomorphic
30
Which one of the following projections requires a separate computation and a map for each city or base upon which the map is centered
Azimuthal Equidistant
31
Every parallel of latitude is represented on a map by the development circumference of the base of a right cone tangent to the earth at that parallel in the projection
Polyconic
32
Colors used for water or hydrographic features such as reservoirs, rivers, lakes, canals, marshes, ponds, and wetlands.
Blue
33
Color used for all man-made or cultural features, political subdivision, place names, grid lines, and letterings on the map.
Black
34
Color used as a surface tint or cover overlay for wooded areas and other forms of vegetation. It is used to show features such as trees, grass, orchards, vineyards, etc.
Green
35
Color used to emphasize important roads and public subdivision lines.
Red
36
Color used as a surface tint to portray built-up urban areas and the area coverage of large cities.
Pink
37
Color used sometimes in place of brown.
Gray
38
A full headed and full feathered arrow represents.
True Meridian
39
A half headed and half feathered arrow represents.
Magnetic Bearing
40
Map scales having scales of 1:10000, or smaller and with contour intervals ranging from 5 to 2,000 meters.
Small-scale maps
41
Map scales having scales ranging from 1:2000 to 1:10,000 and with contour intervals ranging from 1.0 to 5.0 meters. They are also referred to as the intermediate scales.
Medium Scale Maps
42
Map scales having scales of 1:2000 or larger and with contour intervals ranging from 0.1 to 2 meters
Large-Scale Maps
43
A style of letters which have heavy strokes consisting of heavy and light lines.
Roman Letters
44
A style of letters or the lines of the letters which are composed of uniform width strokes. It is used for titles and in identifying hypsographic names such as mountains, valleys, and hills. They are widely used when a heavy weight and finished appearance are desired and may be drawn vertical or inclined.
Gothic Letters
45
A style of letters or single stroke letters which are most easily and rapidly made and are standard practice for fieldnotes and notations on maps and drawings.
Reinhardt Letters
46
It refers to all identifiable features of the earth’s surface, whether natural or artificial, which can be assigned to a specific position
Topography
47
A representation of the earth’s surface in 3 dimensions. It shows the same features as a planimetric map and in addition indicates relief, usually by means of contours which is its distinguishing characteristic.
Topographic Maps
48
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 topographic or relief features of the land.
Planimetric Map
49
A graphic representation of the earth’s surface or other celestial body, by means of signs and symbols or photographic imagery at some given scale or projection.
maps
50
This projection resembles the mercator projection but shows less exaggeration of area in the higher latitudes.
Miller Projections
51
These are made by stereoscopic means as seeing in three dimensions.
Stereometric maps
52
It is similar to a topographic maps but it has its own particular symbols. It contains lines of equal depth, interpolated from soundings.
Hydrographic Maps
53
It shows land or submarine bottom relief represented as contours of hachures.
Hypsometric Maps
54
It shows land or submarine bottom relief represented as contours of the ocean.
Bathymetric Map
55
It is a conic projection based upon two parallels where the cone cuts through the sphere at two chosen standard parallels.
Lambert Projections
56
A projection which is neither conformal nor equal area.
Aphylactic projection
57
Any map representing large countries and continents in a small scale.
Chorographic map
58
The art and science of expressing graphically by maps and charts the known physical features of the earth.
Cartography
59
Any system of representing the parallels and meridians on a plane surface.
Reinhardt Letters
60
Pinpoint or crosses on the four sides of the map by which color separation drawings are adjusted to each other.
Register Marks
61
The inner border of a map
Neat lines
62
Map projections turned at right angles to their usual orientation.
Transverse Projection
63
Any map showing boundaries and subdivisions of a tract of land determined by surveying.
Planimetric Map
64
A reference element, such as line or plane to which position of other elements are related.
Fix
65
A sequence of colors usually varying from green to brown, marking zones of elevations between successive contour lines.
Altitude tint
66
A map used for navigation in air or in water. It is a large special purpose map or diagram.
Chart
67
A chart used for air navigation.
Aeronautical Chart
68
Engraving lines, symbols and windows in a scribe coating usually used in the preparation of negative for map production.
Scribing
69
The trace of the plane on the earth’s surface which passes through the poles.
meridian
70
A small or medium scale map showing the nature of relief by semi-pictorial symbols.
Isoplets
71
It is related to the measurement of ocean or other water depths.
bathymetry
72
Lines on the earth’s surface cut by planes parallel to the equator.
Parallels
73
A closed hachured contour line represents a
depression
74
A chart used for air navigation.
Aeronautical Chart
75
The relative error of closure for a secondary traverse.
1:10000
76
The relative error of closure of primary traverse
1:20000
77
The azimuth used in the cadastral project shall be known as
grid azimuth
78
An opening, usually horizontal, driven from the surface to a working area of a mine.
Adit
79
Top or roof of an underground opening
Back
80
Horizontal or nearly horizontal opening in or into an ore deposit.
Drift
81
Intersection of an ore body and the earth’s surface.
Cropline
82
Horizontal opening between entries.
Cross cut
83
An opening driven into an ore deposit for use as haulways, ventilation, and/or access
Level
84
End wall of an entry or an opening where ore is being extracted.
Face
85
Working section designated by an elevation difference from the surface
Aeronautical Chart
86
Block of ore/rock between the entry and the crosscut used to support the overburden
Pillar
87
Vertical or sloped opening in the ore from a level.
Raise
88
Wall of an entry
Rib
89
Area from the last crosscut to the face
Room
90
Top of the room or entry
Roof
91
Vertical or sloped opening in or into a mine used for haulway, ventilation, or for access
Shaft
92
Inclined opening driven to the ore deposit
Slope
93
A chart used for air navigation.
Aeronautical Chart
94
An imaginary line on the ground, all points of which are at the same elevation above a special datum.
Contour lines
95
A spherical body. In cartography, it refers to a small sphere representing the earth.
globe
96
This will show the for everyday of the year the position on which the sun shines vertically when the local time is 12 noon on the meridian for which it is drawn.
analemma
97
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.
orthodrome
98
An explanation of symbols on maps.
legend
99
Lines drawn on maps connecting points of equal value.
isopleths
100
A river or lake which is dry for three months or more on the average.
intermittent river or lake
101
A shade between black and white.
halftone
102
A drawing of three dimensional body related to three axes. The dimensions parallel to the axes are true to scale. One of the axes is truly vertical.
isometric diagram
103
A map which is sufficiently complete to be given to the engraver or scriber for the preparation of the printing plates.
Guide copy
104
A lune shaped map to be fitted on globe.
globe gore
105
An organic colloid which swells in cold water and dissolves in hot water. It is used in most photographic emulsions.
gelatin
106
A network of two sets of regularly spaced straight lines intersecting usually at right angles
grid
107
Relatively permanent material object, natural or artificial, bearing a marked point whose elevation above or below an adopted datum is known.
bench mark
108
Figure of the Earth visualized as a mean sea level surface extended continuously through the continents. It is a theoretically continuous surface that is perpendicular at every point to the direction of gravity (the plumbline).
geoid
109
Line joining points on the Earth's surface having equal magnetic declination as of a given date.
isogonic lines
110
Family of maps conforming generally to the same specifications and designed to cover an area or a country in systematic pattern.
map series
111
Map designed to provide information on a single topic, such as geology, rainfall, population.
thematic map
112
Lines drawn on maps connecting points of equal value.
isopleths
113
Device for sensing radian energy in several channels of the electromagnetic spectrum.
multispectral scanner
114
Process of detecting and (or) monitoring chemical or physical properties of an area by measuring its reflected and emitted radiation.
remote sensing
115
Relationship existing between a distance on a map, chart, or photograph and the corresponding distance on the Earth.
scale
116
Method of extending horizontal position on the surface of the Earth by measuring the angles of triangles and the included sides of selected triangles.
triangulation
117
Method of surveying wherein the lengths of the triangle sides are measured, usually by electronic methods, and the angles are computed from the measured lengths.
trilateration
118
Meridian of longitude 0 degrees, used as the origin for measurements of longitude.
prime meridian
119
The point which the sky appears to rotate is called
CELESTIAL POLE
120
The point which the sky appears to rotate in a counter clockwise direction is called
NORTH CELESTIAL POLE
121
A small circle of constant altitude parallel to the horizon is called
ALMUCANTAR or PARALLEL OF ALTITUDE
