Podcast
Questions and Answers
What is the main characteristic of a tangent conic projection?
What is the main characteristic of a tangent conic projection?
- It preserves directions from a central point
- It touches the Earth at a single latitude (correct)
- It touches the Earth at two points
- It projects the Earth onto a flat plane that is tangent at the Equator
Which of the following is not a type of azimuthal or planar projection?
Which of the following is not a type of azimuthal or planar projection?
- Equatorial
- Cylindrical (correct)
- Polar
- Oblique
What does a representative fraction map scale, such as 1:24,000, indicate?
What does a representative fraction map scale, such as 1:24,000, indicate?
- The map shows 1 unit for every 24,000 units on the Earth's surface
- The map shows 1 inch for every 24,000 inches on the Earth's surface
- The map shows 1 kilometer for every 24,000 kilometers on the Earth's surface
- The map reduces everything on the Earth to one 24,000th of its real size (correct)
Which type of map scale shows more detail but less area?
Which type of map scale shows more detail but less area?
What is the purpose of a graphical scale on a map?
What is the purpose of a graphical scale on a map?
Which type of map projection preserves directions from a central point?
Which type of map projection preserves directions from a central point?
Which of the following is NOT a reason for projecting the Earth's surface onto a plane?
Which of the following is NOT a reason for projecting the Earth's surface onto a plane?
Which property of map projections ensures the correct representation of shapes?
Which property of map projections ensures the correct representation of shapes?
What is the relationship between conformality (shape) and equivalence (size) in map projections?
What is the relationship between conformality (shape) and equivalence (size) in map projections?
What is the primary purpose of map projections?
What is the primary purpose of map projections?
Which of the following is NOT a property of map projections?
Which of the following is NOT a property of map projections?
What is the primary reason that map projections involve distortion?
What is the primary reason that map projections involve distortion?
Which of the following is considered a large-scale map compared to a map with an RF of 1:1,000,000?
Which of the following is considered a large-scale map compared to a map with an RF of 1:1,000,000?
What is the primary purpose of a reference map?
What is the primary purpose of a reference map?
Which of the following statements about reference maps is true?
Which of the following statements about reference maps is true?
Which type of map is used to illustrate the physical features of land and water within an area?
Which type of map is used to illustrate the physical features of land and water within an area?
How do thematic maps differ from reference maps?
How do thematic maps differ from reference maps?
How can GIS technology be used with road maps?
How can GIS technology be used with road maps?
Study Notes
Tangent Conic Projection
- Tangent conic projections are characterized by their contact with the globe at one or two standard parallels.
Azimuthal Projections
- Conic is not a type of azimuthal or planar projection.
Map Scale
- A representative fraction (RF) map scale, such as 1:24,000, indicates that one unit on the map represents 24,000 units in the real world.
- A larger map scale (e.g., 1:10,000) shows more detail but less area compared to a smaller scale map (e.g., 1:100,000).
Graphical Scale
- A graphical scale provides a visual representation of the map scale, allowing for direct measurement of distances on the map.
Azimuthal Projection
- An azimuthal projection preserves directions from a central point.
Reasons for Map Projections
- Conic is NOT a reason for projecting the Earth's surface onto a plane.
Map Projection Properties
- Conformality ensures the correct representation of shapes on a map.
- A map projection can be either conformal (preserving shape) or equivalent (preserving area), but not both.
- The primary purpose of map projections is to represent the three-dimensional Earth on a two-dimensional surface.
- Equidistance is NOT a property of map projections.
Distortion
- Distortion in map projections is unavoidable because the Earth is a sphere and a map is a flat surface.
- A map with an RF of 1:10,000 is considered a large-scale map compared to a map with an RF of 1:1,000,000.
Reference Maps
- The purpose of reference maps is to provide general information about the geographic features of an area.
- Reference maps focus on location and generalized features, while thematic maps emphasize a specific theme.
Thematic Maps
- Reference maps illustrate physical features of land and water, while thematic maps focus on specific data or themes, such as population density, rainfall patterns, or geological formations.
- GIS technology can be used with road maps to create interactive map applications that provide real-time traffic information, directions, and other navigation services.
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Description
Test your knowledge on conic and azimuthal map projections. Learn about the types of map projections, properties, and their characteristics in this quiz.
