Worksheet on contour and cross-section skills for geography students.

To solve this problem, we need to draw a cross-section (a side view) of the land based on the contour map provided. A cross-section shows what the landscape looks like if you were to slice through it along a specific line and look at it from the side.

Here is the step-by-step process to complete the task:

Step 1: Understand the Map

* Contour Lines: The curved lines on the map connect points of equal height.
* Contour Interval: Look at the numbers on the lines. In diagram (a), the lines are labeled 20, 40, 60, 80, 100. This means each line represents a change in height of 20 meters.
* The Section Line: There is a straight line drawn across the map with points labeled A on the left and B on the right. We need to draw the profile of the land along this specific line.

Step 2: Set Up Your Graph

Look at the blank grid provided on the right side of the worksheet.
* The horizontal axis (bottom) represents the distance from point A to point B.
* The vertical axis (side) represents the height in meters. Notice the scale goes from 0 to 120.

Step 3: Plot the Points

We will move along the line from A to B and mark the height every time we cross a contour line.

1. Start at Point A:
* Point A is located exactly on the contour line labeled 20.
* Find "A" on the bottom of your graph grid. Go straight up to the 20m line on the vertical axis. Put a dot there.

2. Move towards the Hill:
* As you move right from A, the next line you cross is 40. Go up to the 40m level on your graph and put a dot.
* The next line is 60. Go up to 60m and put a dot.
* The next line is 80. Go up to 80m and put a dot.
* The next line is 100. Go up to 100m and put a dot.

3. The Peak (Top of the Hill):
* Inside the 100m ring, there is a small circle labeled with a triangle or just empty space. This is the top of the hill.
* Since the last line was 100, the peak must be higher than 100 but lower than the next imaginary line (120). Let's estimate the peak is around 110m.
* Find the middle of the innermost circle on the map. On your graph, go up to roughly halfway between 100 and 120 (so, 110) and put a dot.

4. Going Down the Other Side:
* Continue moving right towards B. You will cross the contour lines again as you go down.
* Cross the 100 line again. Mark a dot at 100m.
* Cross the 80 line. Mark a dot at 80m.
* Cross the 60 line. Mark a dot at 60m.
* Cross the 40 line. Mark a dot at 40m.

5. End at Point B:
* Point B is located on the contour line labeled 20.
* Find "B" on the bottom of your graph. Go up to the 20m line and put a final dot.

Step 4: Connect the Dots

Once you have all your dots plotted, take a ruler or a freehand pencil and connect them with a smooth, curved line.
* Do not connect them with straight jagged lines; hills are round, so the line should be a smooth curve (like a rainbow shape).

***

Final Answer:
To complete the cross-section:
1. Start at point A on the horizontal axis and plot a point at 20m height.
2. Plot subsequent points at 40m, 60m, 80m, and 100m as you move right toward the center.
3. Plot the peak of the hill in the center at approximately 110m (halfway between 100 and 120).
4. Plot the descent on the other side at 100m, 80m, 60m, and 40m.
5. End at point B on the horizontal axis at 20m height.
6. Connect all dots with a smooth, curved line to create a hill shape that rises from 20m to ~110m and falls back to 20m.