Splash Screen. Globes and Maps Map Projections Location Hemispheres Parts of a Map Using Scale Types of Maps Graphs, Charts, and Diagrams. Handbook Menu. Globes and Maps. What is a Globe?.
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When the Earth’s surface is flattened on a map, big gaps open up. Mapmakers stretch parts of the Earth to show either the correct shapes of places or their correct sizes. Mapmakers have developed different projections, or ways of showing the Earth on a flat piece of paper.Map Projections
How Do I Use a Scale Bar?
Use the scale bar to find actual distances on a map. The scale bar tells you how many kilometers or miles are represented in that length. You can use a ruler, then, to calculate distances based on the scale bar’s length.
About ½ an inch equals 300 miles. A little more than ½ a centimeter is equal to 300 kilometers.Using Scale
General Purpose Maps
Maps are amazingly useful tools. You can use them to show information and to make connections between seemingly unrelated topics. Geographers use many different types of maps. Maps that show a wide range of information about an area are called general purposemaps. Two of the most common general purpose maps are physical maps and political maps.Types of Maps
Special Purpose Maps
Some maps are made to present specific types of information. These are called thematic or special purpose maps. These maps usually show specific topics in detail. Special purpose maps may include information about
A contour map has contour lines—one line for each major level of elevation. All the land at the same elevation is connected by a line. These lines usually form circles or ovals—one inside the other. If contour lines are close together, the surface is steep. If the lines are spread apart, the land is flat or rises gradually.Types of Maps
Graphs present and summarize information visually. Each part of a graph provides useful information. To read a graph, follow these steps:
You can use circle graphs when you want to show how the whole of something is divided into its parts. Because of their shape, circle graphs are often called pie graphs. Each slide represents a part or percentage of the whole pie. The whole graph generally totals 100 percent.Graphs, Charts, and Diagrams
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