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Esri GIS Fundamentals Foundation Certification 2201 Questions and Answers 2024/2025 R230,60   Add to cart

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Esri GIS Fundamentals Foundation Certification 2201 Questions and Answers 2024/2025

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Datum  - Provides a frame of reference for finding locations - Based on a spheroid Minor Axis  - The shorter axis of the ellipse - North to South Shape of the Earth (Ellipsoid)  Oblate Ellipsoid - because it rotates on the minor axis Prolate Ellipsoid  If the Earth rotated abou...

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  • October 10, 2024
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  • 2024/2025
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2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!


Esri GIS Fundamentals Foundation
Certification 2201 Questions and
Answers 2024/2025
Datum


 - Provides a frame of reference for finding locations
- Based on a spheroid




Minor Axis

 - The shorter axis of the ellipse
- North to South




Shape of the Earth (Ellipsoid)

 Oblate Ellipsoid - because it rotates on the minor axis


Prolate Ellipsoid


 If the Earth rotated about its major (longer; West/East) axis


Ellipsoid

 a model of the rounded shape of earth (bulging at the equator)


Measuring Ellipsoids

 Measured by semi-axes (half of an axis)
- Semimajor and Semiminor axes




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,2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!

Spheroid

 An ellipsoid that approximates a sphere
- More descriptive, and used by Esri

- Spheroid projections: WGS84, WGS72




The two definitions for a spheroid

 1. 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

 Current: GRS80 (Currently replacing the former)
Former: Clark 1866




Authalic Sphere

 A sphere with the same surface area as the spheroid (to make calculations easier)


Choosing a spheroid model

 - 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)




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 Right-click layer, properties, source


How do you get to the swipe function?


 1) 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?

 1) Open the ribbon map tab
2) Under "Inquiry", click "Measure"




Who formalized the system of what we today call Latitude and Longitude?

 Hipparchus


What is another name for Latitude and Longitude?

 Parallels and Meridians (based on 360 degrees)


What is the Equivalent to 360 Degrees (in terms of Lat and Long)?


 - Each degree is divided into 60 min
- Each min is divided into 60 sec




Lines of Latitude

 - Parallel
- Run East and West

- Measure the distances from north or south of the Equator

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