53. Bathymetry Map

This topographic (hypsometrical) map contours the depths of water bodies (i.e. ocean floors). Its contour intervals are called isobaths and these maps are often used for deep sea navigation and the study of past ocean floors. They are obtained through depth sounding.

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52. Hypsometric Maps

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Hypsometric map gives information on the 'relief' of earth's surface (elevation) using contours or shading such as the map on the left.

51. Ideogram

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Ideograms are cryptic graphic symbols that represent ideas about place. The image to the left is a map of a gene. Each color (strip of color) represents a different gene. This ideogram allows the genes to be mapped out on the chromosome because they can't be observed. It also allows geneticists to keep track of genes and see how they translocate or "move" to another during replication.

50. Isoline Map

Isoline maps and contour maps are synonymous. They use intervals to depict change in the measured variable. This is an isoline map of the January temperatures in Australia. According to this isoline map, the difference between each line is 10deg F.

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49. Topographic Map

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Topographic maps such as this one represent the natural features of a land mass. As you can see, Africa is mostly desert, flat terrain, and jungle. Maps such as these use a variety of methods to convey information (i.e. color, contouring, etc.).

48. Line Graph

Line graphs can serve as maps for continuous data such as sound. This graph allows us to see that sound travels as a wave and not like individual particles. It also lets us know the frequency of the wave; according to this graph this is a sine wave.
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47. Magnetic Resonance Imaging

MRI's are also a form of remote sensing as well as mapping. They allow healthcare professionals to observe and map out the inside of the human body in a non invasive manner. They serve as maps because many doctors would not be able to treat their patients without images such as these. Thus serving as navigational tools for physicians.

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46. Nominal Area Choropleth Map

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This map is also a Bivariate Choropleth because it maps two variables--1) homeowners 2) race of homeowners.

45. Isopleth

Yet another type of contour map, these maps display data for many variables in the same manner as other contour maps (i.e. isohyet). This particular map represents the sound levels in a given area. According to this map, noise levels are lower in the less developed areas.
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44. GIS Map

Geographic Infomation Systems create maps such as these that compile layers of data to form one maps. For example this map has a aerial view as well as street names to better aid navigation. A real picture would never be able to have this scale and still identify street names, hence the advantage to this type of cartography.
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43. Isohyets

Above is an Isohyetal map (aka rainfall map). These maps spatially represent rainfall levels (in inches) in a given area. According to this map, Waglan is only expected to receive 20-30 inches of rain.

42. Lorenz Curve

This graph is also known as the Laffer Curve, an economic representation of how taxation will benefit a country. In this graph, if taxes are too low no profit will be made and the same for if they are too high. However, if they tax moderately, the most profit will be a result. This is an example of a Lorenz curve. The curve represents the actual distribution of profit.

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41. Index Value Plot

Index value plots operate using index values rather than absolute numbers. Because of this, they are able to point out discrepancies in data. The plot to the left shows the index values for air, soil, and wind indices in the span of a year.

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40. Conformal Projections

This map of the world is also known as a conformal (meaning it holds 'true shape') projection. It is an excellent representation of latitudinal and longitudinal coordinates and is often used for navigation.
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39. Flow Map

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This line map is also known as a flow map; it shows the rate of flow so that someone may avoid congestion. For example, many GPS systems come equipped with a traffic flow embedded in the maps so that you know what routes are most congested. In this map, the thicker lines indicate a heavier traffic flow.

38. Kriging

This is a type of contour map as denoted by the colored lines. This kind of mapping process is more objective means of contouring data.
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37. Proportional Circle Map

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These are a variation of dot density maps; rather than showing density, these maps use circles instead of dots. The circles are proportional to the size of the measured variable rather than the area it covers. More specifically, this is a continuously graded proportional circle map. It indicates that the largest (not densest) Mexican populations are in California and Texas.

36. Data Visualization

This dot distribution also forms a "map" of a 3d orbital electron configuration. Each of the dots represent electrons. The distribution denotes the shape thus allowing scientists to know which orbital this is.
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35. Statistical Map

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This is an example of a statistical map. It is the 3-D view of an the electron cloud in a magnetron. These types of maps are extremely useful visualizations methods for subjects such as physic and chemistry because they help illustrate processes that cannot be observed by the human eye. These images are formed using the mathematical definitions of space and time.

34. Concept Map

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While most maps visualize/organize the physicalities of earth, concept maps do the same for information. These are basically the maps of a thought, theory, or idea. Not only are they guides for understanding information, but they also convey one's thoughts to another. The concept map shown is a map of how to map concepts (ironic huh?) Search engines use this type of mapping to organize results when an inquiry is made (i.e. google, yahoo, etc.)