Topography PowerPoint Presentation, PPT - DocSlides
A . map . showing the surface features of an area. Topography is based on an area’s elevation, relief, and landforms. What is topographic map?. Example:. Contour lines. Contour intervals. Reliefs. How to read . ID: 511301Direct Link: Link:https://www.docslides.com/tatiana-dople/topography- Embed code:
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Presentations text content in Topography
A map showing the surface features of an areaTopography is based on an area’s elevation, relief, and landforms
What is topographic map?Slide3
Contour linesContour intervalsReliefs
How to read
A line that connects points of equal elevation.Image an island. (land surrounded by water on all sides). If you walked along the beach where the water and land meet would you be at the same elevation line?If you traced out your path on a map you would have traced out a contour line. A line that follows equal elevation. It might look like this:
Now image that the water rose 10 meters and you walked along the path where the water and land meet up. What would your path look like then?Slide7
What if the water rose another 10 meters? How would the contour lines continue to look?Slide8Slide9Slide10
Contour lines by themselves do not tell you much about the shape of the land but stacking the contour lines together can.
Stacking Contour LinesSlide11Slide12
The change in elevation from one contour line to the nextThe shorter the distance between two contour lines, the steeper the slope
The change in elevation between contour lines. The contour interval is the same for a given map. The index contours are usually given in round numbers. ( ie. 600 meters or 20 meters)Usually index contours are a bolder looking line. The units of the contour are usually given on the map or located within the legend of the map.
How can you find t
Contour lines that are close together would represent what?A steep slope – the lines being close together means the elevation is changing a lot in a small distance.Contour lines that are far apart would represent what? A gentle slope – the lines being far apart would represent that the slope is not changing much over a large area.
Interpreting Topographical MapsSlide17Slide18
If you are walking in a direction where the contour lines are decreasing, are you walking uphill or downhill? Downhill If you are walking in a direction where the contour lines are increasing, are you walking uphill or downhill? Uphill
Interpreting Topographical MapsSlide19
Uphill or Downhill?Slide20
Contour lines in the shape of a V indicate a valley or a ridge line.If the V is pointed downhill, that indicates a ridge line.If the V is pointed uphill, that indicates a valley. ( A possible location of a steam or river)
Interpreting Topographical MapsSlide21
Ridge or Valley?Slide22
The difference between the highest and lowest elevations in an area
Many uses in science, business, government, and everyday lifeGPS (hiking climbing, navigating)Planning tripsPlanning buildings, parks, schools, churches
Real world applicationsSlide28Slide29Slide30Slide31Slide32