Types of Maps
Standard Maps
What type of maps are political, geographic, and topographic maps?
A simplified image that is a model of part of the Earth's surface.
What is a map?
If a map's projection surface is shaped like a cone
What is Conic Projection?
The three types of stored data.
What are points, lines, and polygon?
Why are maps of the Earth's surface distorted?
You can't flatten a sphere without distorting information on its surface. (2D -- > 3D)
If it touches somewhere between the Equator and a pole
What is oblique projection?
1 inch on the map may represent 1 mile in the real world. This ratio 1in = 1mi.
What is a map scale?
Imagine taking a sheet of paper and wrapping it around a globe. The sheet of paper forms a cylinder.
Cylindrical projections
What feature of GIS maps sets them apart from standard maps?
GIS maps are created by overlaying multiple thematic layers of data on a single map.
What method do cartographers use to minimize distortion in the middle of a map, especially one showing a large part of the Earth's surface?
Cartographers use a map projection that touches the globe near the middle of the map to minimize distortion.
Use a theme or unifying idea when plotting data on a map.
What is a thematic map?
Scientists who make maps
A projection centered on the middle of North America would be an example.
What is an example of oblique projection?
What is the best way to quickly collect geographic data over large areas?
Using remote sensing is the fastest means for collecting geographic data over large areas.
Thematic maps display specific kinds of related data on a standard map so that the viewer can recognize geographic relationships.
1. Shows names, boundaries, shapes of countries, states, national governments
2. Focuses on names, and locations of man-made and natural physical features.
3. Displays elevation and landform information.
1. Political Maps
2. Geographic Maps
3. Topographic Maps
When latitude and longitude are together.
What are Geographic Coordinates
The map does not preserve the actual shape of features, and the areas are not proportional.
What are 'false cylindrical' projections?
Give 4 examples that show how GIS data can help people.
Trip planning, monitoring disease spread, emergency response. ETC.
The standard map feature that explains symbols used for main highways, secondary roads, and unpaved roads, etc.
What is a legend / key?
Explain equatorial, polar, and oblique projection.
Equatorial: Touches or wraps around the Equator
Polar: Touches a pole
Oblique: Touches between the Equator and a pole.
Lines of longitude is also called
Every 1° of longitude equals a _______ difference in local solar time.
Meridian
4 Minute
The simplest kind of projection involves a flat plane touch the globe at a point. When the 'light bulb' is at the center of the Earth.
What is a gnomonic projection?
The recognized methods for collecting data used in a GIS.
What is surveying, Remote Sensing, and Acoustic Sensing?
What are small-scale, large-scale, and globe maps? Give an example of each.
Large Scale: Show a smaller area (City)
Globe: Shows the whole World.