Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of...
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Transcript of Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of...
![Page 1: Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of landforms/features of Earth that you can think of. Example:](https://reader033.fdocuments.us/reader033/viewer/2022061507/56649f0d5503460f94c21062/html5/thumbnails/1.jpg)
Aim: How do we read Topographic Maps?
Do Now:
In your notes, list all the different types of landforms/features of Earth that you can think of.
Example: Hills
![Page 2: Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of landforms/features of Earth that you can think of. Example:](https://reader033.fdocuments.us/reader033/viewer/2022061507/56649f0d5503460f94c21062/html5/thumbnails/2.jpg)
Topography:
The shape of the land.
K2, PakistanNapa Valley, California
Grand Canyon, Arizona
![Page 3: Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of landforms/features of Earth that you can think of. Example:](https://reader033.fdocuments.us/reader033/viewer/2022061507/56649f0d5503460f94c21062/html5/thumbnails/3.jpg)
Topographic Maps: • Represent the shape of the land on a
flat piece of paper.
![Page 4: Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of landforms/features of Earth that you can think of. Example:](https://reader033.fdocuments.us/reader033/viewer/2022061507/56649f0d5503460f94c21062/html5/thumbnails/4.jpg)
• Isolines/Contour Lines represent different elevations on a topographic map.
• Each isoline connects values that are equal.
“iso” means equal
m
mm
mm
![Page 5: Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of landforms/features of Earth that you can think of. Example:](https://reader033.fdocuments.us/reader033/viewer/2022061507/56649f0d5503460f94c21062/html5/thumbnails/5.jpg)
Altitude:
The height above sea-level or above a specific point on a map.
What value is sea-level?
Get the Altitude worksheet from the back of the room. You and your partner should work on this worksheet together. We will go over it
in 10 min.
![Page 6: Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of landforms/features of Earth that you can think of. Example:](https://reader033.fdocuments.us/reader033/viewer/2022061507/56649f0d5503460f94c21062/html5/thumbnails/6.jpg)
a) Index Contour Lines: labeled with the elevation.
Index contour lines
I. Parts of Topographic maps:
Using the index contour lines, determine the value of the lines in
between.
![Page 7: Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of landforms/features of Earth that you can think of. Example:](https://reader033.fdocuments.us/reader033/viewer/2022061507/56649f0d5503460f94c21062/html5/thumbnails/7.jpg)
b) Contour Interval:
• Represents a vertical measurement (up hill or down hill).
• Measurement that separates contour lines.
![Page 8: Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of landforms/features of Earth that you can think of. Example:](https://reader033.fdocuments.us/reader033/viewer/2022061507/56649f0d5503460f94c21062/html5/thumbnails/8.jpg)
c) Hachure marks:
refer to a drop in elevation (depression/hole in the ground).
d) Bench mark: shows the exact elevation at that point.
Copy diagram into notes
- The first hachured line repeats the same value as the countour line before it.
- The second hachured line counts down by the contour interval.
![Page 9: Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of landforms/features of Earth that you can think of. Example:](https://reader033.fdocuments.us/reader033/viewer/2022061507/56649f0d5503460f94c21062/html5/thumbnails/9.jpg)
upstream
downstream
When a river or stream crosses a contour line, the contour line bends and points upstream.
E) River and Streams
• Upstream is where the river starts.
• Downstream is where the river ends.
![Page 10: Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of landforms/features of Earth that you can think of. Example:](https://reader033.fdocuments.us/reader033/viewer/2022061507/56649f0d5503460f94c21062/html5/thumbnails/10.jpg)
Closer contour lines = steep slopes.
Further contour lines = gradual slopes.
a) Gradient• Refers to the steepness of the land (slope)
Which side of the hill is the steepest?
WHY?N
II. Calculations on Contour Maps
![Page 11: Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of landforms/features of Earth that you can think of. Example:](https://reader033.fdocuments.us/reader033/viewer/2022061507/56649f0d5503460f94c21062/html5/thumbnails/11.jpg)
b) The highest possible point
will always be one unit of measure less than the next possible contour line.
Contour Interval = 10 m
X 10 m
What is the highest possible
value of X?
![Page 12: Aim: How do we read Topographic Maps? Do Now: In your notes, list all the different types of landforms/features of Earth that you can think of. Example:](https://reader033.fdocuments.us/reader033/viewer/2022061507/56649f0d5503460f94c21062/html5/thumbnails/12.jpg)
Closure
Obtain the worksheet called “Reading a Topographic Map” from the back table and complete the worksheet. We will go
over it when finished.