Question 1

Z-scale in a 3-D view represents the ratio of:

Accepted Answer

A)  the vertical scale / the horizontal scale 
B)  the horizontal scale / the vertical scale 
A)  the vertical scale / the horizontal scale 
B)  the horizontal scale / the vertical scale A

Question 2

Describe the four parameters that can change the appearance of a 3-D view.

Accepted Answer

The four parameters that can change the appearance of a 3-D view are:

1. Perspective: This parameter determines the angle and distance from which the 3-D object is viewed. Changing the perspective can make the object appear larger or smaller, and can also affect the sense of depth and distance in the view.

2. Lighting: Adjusting the lighting in a 3-D view can dramatically change the appearance of the object. Different light sources, angles, and intensities can create shadows, highlights, and reflections that can make the object look more realistic or stylized.

3. Color and Texture: Changing the color and texture of the 3-D object can significantly alter its appearance. Different colors and textures can evoke different emotions and create different visual effects, allowing for a wide range of creative possibilities.

4. Rendering Style: The rendering style determines how the 3-D object is displayed, including factors such as wireframe, solid, or textured rendering. Each rendering style can give the object a different look and feel, and can be used to achieve specific artistic or technical goals.

Question 3

Deriving slope and aspect from an elevation raster is a ______ operation:

Accepted Answer

A)  zonal 
B)  local 
C)  global 
D)  neighborhood 
A)  zonal 
B)  local 
C)  global 
D)  neighborhood D

Question 4

Define "breaklines" in the construction of a TIN.

Accepted Answer

In the context of Geographic Information

Question 5

Which of the following statements is true about DEMs and TINs?

Accepted Answer

A)  One can only convert a TIN into a DEM. 
B)  None of these are correct. 
C)  One can convert a DEM into a TIN, or a TIN into a DEM. 
D)  One can only convert a DEM into a TIN. 
A)  One can only convert a TIN into a DEM. 
B)  None of these are correct. 
C)  One can convert a DEM into a TIN, or a TIN into a DEM. 
D)  One can only convert a DEM into a TIN.

Question 6

ArcGIS can derive a slope layer in either percent slope or degree slope.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following parameters represents the direction from the observer to the surface in a 3-D view?

Accepted Answer

A)  viewing distance 
B)  Z-scale 
C)  viewing azimuth 
D)  viewing angle 
A)  viewing distance 
B)  Z-scale 
C)  viewing azimuth 
D)  viewing angle

Question 8

A hillshade map would look _____ if the sun's angle were higher:

Accepted Answer

A)  darker 
B)  the same 
C)  lighter 
A)  darker 
B)  the same 
C)  lighter

Question 9

ArcGIS uses the maximumz-tolerance algorithm to convert a DEM into a TIN. Explain how the algorithm works.

Accepted Answer

The maximum z-tolerance algorithm used b

Question 10

The local illumination condition in a hillshade view can be influenced by

Accepted Answer

A)  all of these are correct 
B)  local slope 
C)  local aspect 
D)  sun's angle 
A)  all of these are correct 
B)  local slope 
C)  local aspect 
D)  sun's angle

Question 11

A percent slope layer cannot have values greater than 100 percent.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following ArcGIS extensions works with TINs?

Accepted Answer

A)  3D Analyst 
B)  Spatial Analyst 
C)  Geostatistical Analyst 
A)  3D Analyst 
B)  Spatial Analyst 
C)  Geostatistical Analyst

Question 13

Define "profile curvature" and "plan curvature."

Accepted Answer

Profile curvature and plan curvature are

Question 14

What assumptions are used in creating a TIN?

Accepted Answer

A Triangulated Irregular Network (TIN) i

Question 15

Different computing algorithms are available for deriving slopes from an elevation raster. Summarize in words (not equations) their major differences.

Accepted Answer

The major differences between different

Question 16

Suppose you are given a DEM to make a contour map. The elevation readings in the DEM range from 856 to 1324 meters. If you were to use 900 as the base contour and 100 as the contour intervals, what contour values would appear on the map?

Accepted Answer

To create a contour map using a Digital

Question 17

The accuracy of slope measures from a DEM can be influenced by

Accepted Answer

A)  local topography 
B)  the computing algorithm 
C)  all of these are correct 
D)  both the computing algorithm and the DEM resolution 
E)  the DEM resolution 
A)  local topography 
B)  the computing algorithm 
C)  all of these are correct 
D)  both the computing algorithm and the DEM resolution 
E)  the DEM resolution

Question 18

Describe factors that can influence the visual effect of hill shading.

Accepted Answer

Hill shading, also known as relief shadi

Question 19

What is a TIN?

Accepted Answer

A TIN, or Tax Identification Number, is

Question 20

A positive curvature value means an upwardly _____ surface and a negative curvature value means an upwardly ______ surface:

Accepted Answer

A)  concave, convex 
B)  convex, concave 
A)  concave, convex 
B)  convex, concave

Z-scale in a 3-D view represents the ratio of:

Describe the four parameters that can change the appearance of a 3-D view.

Deriving slope and aspect from an elevation raster is a ______ operation:

Define "breaklines" in the construction of a TIN.

Which of the following statements is true about DEMs and TINs?

ArcGIS can derive a slope layer in either percent slope or degree slope.

Which of the following parameters represents the direction from the observer to the surface in a 3-D view?

A hillshade map would look _____ if the sun's angle were higher:

ArcGIS uses the maximumz-tolerance algorithm to convert a DEM into a TIN. Explain how the algorithm works.

The local illumination condition in a hillshade view can be influenced by

A percent slope layer cannot have values greater than 100 percent.

Which of the following ArcGIS extensions works with TINs?

Define "profile curvature" and "plan curvature."

What assumptions are used in creating a TIN?

Different computing algorithms are available for deriving slopes from an elevation raster. Summarize in words (not equations) their major differences.

Suppose you are given a DEM to make a contour map. The elevation readings in the DEM range from 856 to 1324 meters. If you were to use 900 as the base contour and 100 as the contour intervals, what contour values would appear on the map?

The accuracy of slope measures from a DEM can be influenced by

Describe factors that can influence the visual effect of hill shading.

What is a TIN?

A positive curvature value means an upwardly _ surface and a negative curvature value means an upwardly __ surface:

Introduction

Coordinate Systems

Vector Data Model

Raster Data Model

GIS Data Acquisition

Geometric Transformation

Spatial Data Accuracy and Quality

Attribute Data Management

Data Display and Cartography

Data Exploration

Vector Data Analysis

Raster Data Analysis

Viewshed and Watershed Analysis

Spatial Interpolation

Geocoding and Dynamic Segmentation

Least Cost Path and Network Analysis

GIS Models and Modeling

Filters

Exam 13: Terrain Mapping and Analysis

Z-scale in a 3-D view represents the ratio of:

Describe the four parameters that can change the appearance of a 3-D view.

Deriving slope and aspect from an elevation raster is a ______ operation:

Define "breaklines" in the construction of a TIN.

Which of the following statements is true about DEMs and TINs?

ArcGIS can derive a slope layer in either percent slope or degree slope.

Which of the following parameters represents the direction from the observer to the surface in a 3-D view?

A hillshade map would look _____ if the sun's angle were higher:

ArcGIS uses the maximumz-tolerance algorithm to convert a DEM into a TIN. Explain how the algorithm works.

The local illumination condition in a hillshade view can be influenced by

A percent slope layer cannot have values greater than 100 percent.

Which of the following ArcGIS extensions works with TINs?

Define "profile curvature" and "plan curvature."

What assumptions are used in creating a TIN?

Different computing algorithms are available for deriving slopes from an elevation raster. Summarize in words (not equations) their major differences.

Suppose you are given a DEM to make a contour map. The elevation readings in the DEM range from 856 to 1324 meters. If you were to use 900 as the base contour and 100 as the contour intervals, what contour values would appear on the map?

The accuracy of slope measures from a DEM can be influenced by

Describe factors that can influence the visual effect of hill shading.

What is a TIN?

A positive curvature value means an upwardly _____ surface and a negative curvature value means an upwardly ______ surface:

Introduction

Coordinate Systems

Vector Data Model

Raster Data Model

GIS Data Acquisition

Geometric Transformation

Spatial Data Accuracy and Quality

Attribute Data Management

Data Display and Cartography

Data Exploration

Vector Data Analysis

Raster Data Analysis

Viewshed and Watershed Analysis

Spatial Interpolation

Geocoding and Dynamic Segmentation

Least Cost Path and Network Analysis

GIS Models and Modeling

Filters

A positive curvature value means an upwardly _ surface and a negative curvature value means an upwardly __ surface: