November 2010 5th Grade: Unit- Landforms (Topography) Duration: 12:15-1:00 Objective-Students will learn to create more advanced profiles using different topographic features Materials Needed-Profile sheets, Foss Creek sheets, rulers, transparencies, overhead projector, stream table Topographic Map Analysis (12:15-12:40) -What landform information can you get from a topographic map? -Distribute copies of Foss Creek map, explain that it is a fictional topographic map that they will be analyzing -Have students identify the contour lines, elevations and system of measurement already on the map. With that information, have them label each contour line and determine the contour interval -Explain that with division (100 ft. difference/5 contour lines=20 foot interval) we can determine the interval -Students will circle the lowest elevation and box the highest elevation -Define: bench mark-surveyor’s marker usually place permanently in the ground at a known position and elevation -Ask where the two bench marks are on the map -Students will identify Rocky River and will make an arrow showing the direction of water flow -Define: Intermittent stream-water flows in it only during certain times of year Perennial stream-Always has water flowing in it -Identify intermittent and perennial streams Profile (12:40-12:50) -Using rulers, instruct students to draw a line from point A to point B -Fold the Foss Creek Map on that line -Make sure the A side is on the left side of the paper -Label profile, starting at 50 meters in 20 m intervals -Draw profiles Conclusion (12:50-1:00) -Where is the shallowest slope? The steepest? -What do you notice about the contour lines where they intersect the river? -Using a stream table as a visual, show that a river valley is lower in elevation than the land around it, show that a comparable elevation outside of the river valley is going to be lower on the map -Have students compare Foss Creek and Mr. Shasta profiles: What are the differences in landforms, slopes, elevation, etc.?