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Esri GIS Fundamentals Foundation Certification 2201 Questions and Answers 100% Correct
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Esri GIS Fundamentals Foundation Certification 2201
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Esri GIS Fundamentals FoundationCertification 2201
Datum - answer- Provides a frame of reference for finding locations
- Based on a spheroid
Minor Axis - answer- The shorter axis of the ellipse
- North to South
Shape of the Earth (Ellipsoid) - answer Oblate Ellipsoid - because it rotates on the minor
axis
Prolate Ellipsoid - answer If the Earth rotated about its major (longer; West/East) axis
Ellipsoid - answer a model of the rounded shape of earth (bulging at the equator)
Measuring Ellipsoids - answer Measured by semi-axes (half of an axis)
- Semimajor and Semi minor axes
Spheroid - answerAn ellipsoid that approximates a sphere
- More descriptive, and used by Esri
- Spheroid projections: WGS84, WGS72
The two definitions for a spheroid - answer1. An ellipsoid that approximates the shape
of a sphere (Used by this course)
2. An ellipsoid created by rotating an ellipse about either its major axis (prolate ellipsoid)
or its minor axis (oblate ellipsoid)
Most common spheroid projection in North America - answerCurrent: GRS80 (Currently
replacing the former)
Former: Clark 1866
Authalic Sphere - answerA sphere with the same surface area as the spheroid (to make
calculations easier)
Choosing a spheroid model - answer- Smaller than 1:5,000,000: Can use an authalic
sphere
- Larger than 1:5,000,000: May need to choose a spheroid
How to find info (such as the map projection) - answerRight-click layer, properties,
source
, How do you get to the swipe function? - answer1) Click on the layer
2) On the ribbon (top area with tabs), click the feature layer contextual tab
3) Under "Compare", click "Swipe"
How do you measure in ArcGIS Pro? - answer1) Open the ribbon map tab
2) Under "Inquiry", click "Measure"
Who formalized the system of what we today call Latitude and Longitude? -
answerHipparchus
What is another name for Latitude and Longitude? - answerParallels and Meridians
(based on 360 degrees)
What is the Equivalent to 360 Degrees (in terms of Lat and Long)? - answer- Each
degree is divided into 60 min
- Each min is divided into 60 sec
Lines of Latitude - answer- Parallel
- Run East and West
- Measure the distances from north or south of the Equator
- THE SIDEWAYS LINES
Lines of Longitude - answer- Run North and South
- Intersect at the poles
- Measure distances to the east and west of the Prime Meridian
- THE LINES GOING UP-AND-DOWN
The Graticule - answerThe network of intersecting lines of lat and long
Great Circle - answerLines of Latitude - A circle that divides the earth into two equal
halves - the EQUATOR
How are degrees of latitude measured? - answer0 degrees to 90 degrees North AND 0
degrees to 90 degrees South
Longitude/Meridians equivalent of a Great Circle - answerThese converge at the poles,
so every meridian is half of a circle (half of a Great Circle)_
Prime Meridian - answer- 0 degrees to 180 degrees East AND 0 degrees to 180
degrees West of the Prime Meridian
- Being the same size, one meridian over the other is arbitrary
- Official Prime Meridian = Observatory of Greenwich in Great Britan
International Date Line - answerThe 180-degrees meridian
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