Deck 3: Geodesy Mapping

Question 1

Which of the following map scales is classified as large?

A)1 in = 100 ft (1:1,200)
B)1 in = 100 ft to 1,000 ft (1:1,200 to 12,000)
C)1 inch = 1,000 ft or more
D)None of the above

Answer 1

1 in = 100 ft (1:1,200)

Question 2

Simplify the map scale 2 in = 500 ft.

A)1:83
B)1:250
C)1:3,000
D)1:6,000

Answer 2

1:3,000

Question 3

A site map shows a scale of 2 in : 1 mile. What would be the map distance, in inches, if the actual measured distance is 5.28 miles?

A)2.64 in
B)7.28 in
C)10.56 in
D)31.68 in

Answer 3

10.56 in

Question 4

A map of a project site that is 340 miles (north-south) by 160 miles (east-west) needs to be shown on an 8 ½ in x 11 in sheet of paper with 1 in margins. At what scale does the map need to be plotted?

A)1:121,542
B)1:135,168
C)1:1,351,680
D)1:2,154,240

Question 5

What is the advantage of conducting map work in azimuths rather than bearings?

A)Azimuths can be read more easily from a map using a 360°protractor.
B)Azimuths can be measured between points on a map not drawn to scale.
C)Answers A and B
D)None of the above

Question 6

A general rule of thumb for text placement using computer aided drawing software is to place text on drawings and exhibits so that it can be read from which of the following sides?

A)Top
B)Center and left
C)Bottom and left
D)Bottom and right

Question 7

A plat that is plotted at a scale of 1 in = 60 ft needs to be replotted at a scale of 1 in = 50 ft. What change is needed to produce the new plot?

A)Enlarge the drawing by 80%
B)Reduce the drawing by 80%
C)Enlarge the drawing by 120%
D)Reduce the drawing by 120%

Question 8

Which of the following statements is NOT true as related to Land Surveying drawings and sketches?

A)A survey plat, sketch or map must be created whenever a land or boundary survey is done.
B)Every survey plat, sketch or map must contain the legal description of the land being surveyed, either on the face of the survey plat or attached to and referenced by the survey plat.
C)Additions or deletions to survey drawings can be made without the written consent of the signing surveyor.
D)Where evidence of inconsistencies is found, such as overlapping descriptions, hiatuses, excess or deficiency, or conflicting boundary line or monuments, the nature and extent of the inconsistencies shall be shown on the drawing.

Question 9

If the sewer line as-built drawings for a small municipality have been scanned into a file for developing a geographic information system feature class, what is the most likely structure of the resultant file?

A)Metadata structure
B)Vector structure
C)Database structure
D)Raster structure

Question 10

In order to create an acetate overlay of a 1:24,000 scale USGS topographic map so that it can be used with 1:12,000 scale aerial photographs, what setting should be used on a standard photocopier?

A)Reduce the map by 200%
B)Reduce the map by 50%
C)Enlarge the map by 50%
D)Enlarge the map by 200%

Question 11

What tool is typically needed to see three-dimensional images when viewing overlapping aerial photographs?

A)Image sensor
B)Amplifier
C)Stereoscope
D)Microscope

Question 12

Currently, which of the following ellipsoids is widely used for geodetic control in the United States?

A)Clarke 1866
B)Clarke 1880
C)World Geodetic System of 1984 (WGS 84)
D)Geodetic Reference System 1980 (GRS-80)

Question 13

The National Geodetic Survey defines which of the following as "the equipotential surface of the Earth's gravity field which best fits, in a least squares sense, global sea level."

A)Geoid
B)Ellipse
C)Datum
D)UTM Coordinate System

Question 14

The convergence angle varies with which of the following in a Lambert conformal conic projection for a state plane coordinate system?

A)Latitude
B)Longitude
C)Both latitude and longitude
D)None of the above

Question 15

Assuming the radius of the Earth is 20,906,000 ft, what is the ellipsoid distance for a distance measured as 2,500 ft at a mean ellipsoid height of 1,600 ft?

A)2,499.19 ft
B)2,499.81 ft
C)2,500.00 ft
D)2,500.19 ft

Question 16

Which of the following is not a benefit of a state plane coordinate system to surveyors and engineers?

A)A single reference system is provided for all surveys in an area.
B)Significant errors are not introduced when using plane survey techniques and calculations over large areas.
C)A method for determining vertical coordinates of a point.
D)Survey work can be retraced when performed on a state coordinate system.

Question 17

What correction must be made to a measured slope distance prior to calculating state plane coordinates?

A)Reduce measured slope distance to a horizontal distance at a known elevation.
B)Correct the horizontal distance to a geodetic distance.
C)Correct the geodetic distance to a grid distance.
D)All of the above

Question 18

What type of orbit around the Earth places a satellite at exactly the same place in the sky at exactly the same time each day?

A)Geostationary
B)Geosynchronous
C)Elliptical
D)None of the above.

Question 19

Which of the following statements related to UTM Zones is FALSE?

A)The Earth is divided into 60 UTM zones.
B)Each UTM zone is 5° of longitude wide.
C)UTM zones are numbered 1 to 60, starting at 180° and progressing to the east.
D)None of the above

Question 20

If the magnetic azimuth (from north) of a line is 120°15' in a location where the magnetic declination is 12°E, what is the true azimuth of the line?

A)108°15'
B)132°15'
C)S 108 ° 15' E
D)S 132°15' E

Question 21

Magnetic declination is which of the following?

A)The angle between magnetic north and true north
B)Positive when true north is east of magnetic north
C)A and B
D)None of the above