Pre-midterm 1

Question 0

Name 8 components of a map

Answer 0

Publisher 
Title 
Legend 
Directional indicator
Scale
Neatline
Graticule
Insets

Question 1

Describe topographic and planimetric maps

Answer 1

Topographic: present horizontal and vertical features

Planimetric: present only horizontal features

Question 2

What is the Neatline on a map?

Answer 2

Boundary of mapped area

Question 3

Name the two mapping systems and their scales

Answer 3

BCGS

• 1:50,000
• 1:20,000
• 1:10,000
• 1:5,000

NTS

1: 250,000
1: 50,000

Question 4

Describe 6 methods of map generalization

Answer 4

DOESTF

• displacement: locational shift
• omission: omit unimportant information
• exhaggeration: enhancement, symbols
• simplification: reduction of detail
• truth: nothing altered
• fusion: combining of objects/features

Question 5

Name two types of GeoReferencing

List some examples

Answer 5

Non metric

• without measure
• Placename
• landmark
• postal code

Metric
-measured
-linear offset
-lat / long 
-UTM 
$ infinite resolution.  Good for entire globe.

Question 6

What’s a datum?
What are the types of datums?
Provide a brief description

Answer 6

NAD 27: used Clarke 1866 model of ellipsoid for a surface to surface calculation Centered on meads ranch
NAD 83: used GRS 80 to reference a calculation of the earths surface to an ellipsoid
WGS 84: GPS referencing system that uses sattelites to calculate and reference the earths surface

Question 7

What is UTM and how does it work?

How are UTM positions displayed?

Answer 7

UTM stands for universal transverse Mercator.

• It takes 60 6 degree wide projections of the most accurate slices of the earth when referenced to a transverse cylinder.
• position given as zone, hemisphere, easting, northing

Question 8

How are eastings and northings expressed?

What are their boundaries?

Answer 8

• expressed as meters
• zone one starts at 180 degrees
• northings go from zero at equator to 10 million at the North Pole
• eastings start at 500,000 on central meridian of each zone