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Presentation on theme: "Topographic Maps TEKS 8.9 C"— Presentation transcript:
Slide1
Topographic Maps
TEKS 8.9 Cinterpret topographic maps and satellite views to identify land and erosional features and predict how these features may be reshaped by weathering
Slide2
A 2D view of a 3D surface
Slide3
How
do topographic maps give you a picture of what the landscape looks like?
By showing
ELEVATION
Slide4Slide5Slide6Slide7
Contour lines do not cross, split or branch off
Contour lines form a “v” or “u” shape in valleys or streambeds
- bottom
of shape points
uphill/upstream
What is the highest elevation?
What is the lowest elevation?
Which way is the stream flowing?
Slide8
NOTE: Contour lines form a “V” or “U” shape in valleys or stream beds with the bottom of the shape pointing uphill/upstream.
This shape indicates weathering and erosion!
V
-
weathering and erosion affects higher elevations first!
- as the surface continues to weather and erode, the
“v/u” will widen &/or become more pointed
.
-
deposition
occurs
downstream
U
U
Slide9
Where is weathering and erosion taking place?
Slide10
if contour lines are
far apart
the slope is gradual (flat)
if contour lines are
close together
the slope is steep
Spacing between contour lines indicates
slope
= the
steepness
of the
land
Where is the slope the most gradual (or flat)?
Where is the slope the steepest?
Slide11
Where is the slope of the land the steepest? flattest?
Slide12
The contour interval of a map remains consistent throughout the map
What is the contour interval of this map?
Slide13
What is the contour interval of this map?
Slide14
Identify and Label the following on the topographic map above:
Highest Elevation = _______ Place an “F” where the slope is the most gradual (flat)Lowest Elevation = _______ Place an “S” where the slope is the steepestContour Interval = _______
Draw an arrow showing which way the stream is flowing
Slide15
What the landscape (or horizon) looks like
Slide16
Topographic Map & Profile
Slide17
Topographic Map & Profile
Slide18
InterpretCreate a profile showing elevation from point A to B.
