TOPOGRAPHIC MAPS Carter Atkins Paul Clement Jordan Sonderegger

TOPOGRAPHIC MAPS Carter Atkins Paul Clement Jordan Sonderegger

TOPOGRAPHIC MAPS Carter Atkins Paul Clement Jordan Sonderegger Warm Up & Objective Write 3-5 sentences about what you already know about topographic maps. Students will learn how to read and create topographic maps and profiles. What is a Topographic

Map? A topographic map is a map that illustrates with vast amounts of accuracy the physical and cultural features that occur on Earths surface. Reading a Topographic Map The name of the topographic map is given in the northeast corner of the map. A reference map is located in the bottom margin. The reference maps shows just about where this map area is. A map scale is located in the bottom margin as well. It is usually expressed with a fractional scale and a graphic scale.

Reading a Topographic Map Direction of the topographic map is located within the lower margin of the map also. True North is indicated with the black star. It shows the earths geographic north pole. Magnetic north is indicated with the MN. The MN arrow shows both direction and number of degrees the Magnetic North is from the True North. Reading a Topographic Map As you can see on your topographic map at your

table. There are many different colors. These colors indicate various symbols. Red is used for major roads and some boundaries. Black is for buildings and secondary roads. Salmon is for urban areas. Green is for vegetation. Blue is for rivers, streams, and other water features. Brown is for lines called contour lines. Contour lines show elevation.

Purple is for revised map features. Reading a Topographic Maps Reading a Topographic Map Contour Lines as mentioned before show elevation of mountains, hills, and land features. Contour lines connect all points with equal elevations. Some rules about contour lines include: Contour lines never cross. Widely spread indicate gentle hills. Closely spread indicate steep slopes. Contour lines form a V crossing a stream. Every 5th contour line is called the index contour.

The elevation between 2 contour lines is called a contour interval. The contour interval is also located at the bottom margin of the map. How to Draw a Topographic Profile Topographic Profiles show side-views of mountains and their elevations. 1) Create a line called A-B on the contour map through half the mountain/hill/land feature.

2) Lay a sheet of paper along the line you just created. Mark each place where the contour lines reach the edge of the paper and write the elevation. 3) On a separate piece of paper draw a horizontal line that is slightly longer than your line A-B. 4) Create a vertical scale from the horizontal line and label each line with elevations. The first

line on the bottom should begin with an elevation slightly shorter than the lowest elevation that you have marked. 5) Lay the marked edged paper to the vertical scale paper. Place a dot on the vertical scale ^^^ Like this Ending Question Using the topographic map at your table, answer the following on a

separate piece of paper: 1. What is the name of the map? 2. What is one water feature? 3. In what area is this map located? (east, west, south, north) 4. What is the contour interval? 5. What is a topographic map? Sources -in-china/ TASA for information on topographic maps and profiles.

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