Topographic Maps TEKS 8.9 C
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Topographic Maps TEKS 8.9 C

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Topographic Maps TEKS 8.9 C




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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

Slide4

Slide5

Slide6

Slide7

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.