Topographic Maps are used to show three-dimensional surfaces such as earth, by using contour lines to express elevation changes. For example, mountains are picture by imagining a flat horizontal line that has been sliced through the mass. Each quadrangle has a name and is printed on the map to easily located neighboring pieces of land. There is also a scale that shows the grid, interval, and declination on the map.
Thursday, January 27, 2011
Wednesday, January 26, 2011
Planimetric Maps
Planimetric Maps are defined by using horizontal lines to accurately predict the distances between features. This type of map shows geographic objects, physical features, and structures such as roads, buildings, and water masses. Planimetric maps express detail in highways, sidewalks, railroads, bridges, etc.; however, it is hard to determine the level of elevation of objects. It can also be referred to as a line map.
Monday, January 24, 2011
Mental Maps
This is an example of a mental map, which captures a person's point of view through an image. It can be used to represent ideas, thoughts, feelings, and memories. This map is an example of how a child might view their environment and school surrounding. Mental maps are very easy to use, since it is just an organized picture of what is in your mind; however, it is sometimes difficult to capture exactly what it looks like.
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