2- Contour interval?

3- Relief?

4- Draw a circle around a steep slope.

5- Draw a square around a gentle slope.

Calculating the gradient, or slope, in a topographic map profile involves determining both the horizontal distance (usually measured in kilometers, or km), and finding the change in elevation, which is calculated by finding the contour interval and determining the change in elevation.

1- Contour interval?

2- Gradient? (Show your work)

Change in field value = __________

Distance = __________

Gradient = __________

Change in field value = __________

Distance = __________

Gradient = __________

What is the gradient of the land from point C to point D?

What is the gradient of the land from point A to point B?

What is the approximate gradient along the straight dashed line between points X and Y?

a. What is the approximate gradient along the straight dashed line between points X and Y? Units must be included in your answer.

b. What direction is the river “Snapper Creek” flowing in the topographic map above?

Describe how the contour lines in this map indicate that the Saranac River flows from Point A to Point B.

(a) State the general compass direction in which the stream is flowing in the given map.

(b) State how contour lines provide the evidence for determining this direction

On the map, first draw an arrow on the stream to show the direction in which the stream is flowing. Then state one piece of evidence shown on the map that supports the direction of the arrow you drew on the stream.

1- Find the elevations of the points A H.

2- Find the gradient between points G and H.

3- State how the shape of the contour lines crossing the Green River in the given map indicates that this river flows toward the southeast.

Identify the direction of stream movement based on the contour lines on the map above.

Ch.3 Sec. 3 TOPOGRAPHIC MAPS