Topographical map worksheet for students to practice drawing contour lines and understanding elevation changes.

Let's solve this step-by-step based on the image you've provided. This is a topographic map exercise where we need to:

1. Determine the contour interval.
2. Identify elevations at specific points (A, B).
3. Analyze whether walking between points is uphill or downhill.

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🔍 Step 1: Understand the Map

We are given a grid of points with elevation values in feet (or meters). The goal is to connect points of equal elevation to form contour lines.

Elevations shown:
- 350
- 400
- 450
- 500

We can see that these values increase by 50 units each time.

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✔ Question 1: What is the interval for the topographical maps below?

The contour interval is the difference in elevation between adjacent contour lines.

Looking at the numbers:
350 → 400 → 450 → 500
Each step is +50

➡️ Answer: 50 units (likely feet or meters)

> ✔ Contour Interval = 50

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✔ Question 2: What is the elevation at point A?

Point A is labeled and located near several 350 and 400 elevation points.

- The closest labeled value to point A is 350, and it's directly next to it.
- There’s no 400 near A — the nearest 400s are farther away.
- So point A is at 350.

> ✔ Elevation at Point A = 350

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✔ Question 3: What is the elevation at point B?

Point B is surrounded by several 400 and 450 values.

- The closest values to B are 400 and 450.
- But there's a 400 just above and below B, and a 450 nearby.
- Since B is not at a labeled point, but the task says "what is the elevation at point B?" — likely implying we interpret from context.

Wait — actually, looking closely: point B is not labeled with a number, but it’s placed among several 400 and 450 points.

But here’s the key: if the points are already marked with their elevations, then B itself is not labeled, so we must infer its elevation based on surrounding values.

However, upon closer inspection, there is no number written at point B, which suggests that it's not a data point, but rather a reference location.

But wait — let’s look again.

Actually, in the original image, the dots have numbers next to them. Point B is not one of the numbered dots — it's just a red circle without a number.

So how do we find its elevation?

We must infer based on the surrounding contour lines.

But since we haven't drawn the contours yet, we can estimate:

- Points around B: multiple 400s and 450s
- One 400 is very close to B
- One 450 is also nearby
- But no 400 is directly at B, and B is not at any labeled point.

Wait — perhaps I made an error.

Let me recheck: In many such worksheets, the red letters (A, B, C, D, E) are labeled locations, and their elevations are implied by the nearest data points.

But in this case, only the black dots have numbers. The red circles (A, B, C, D, E) are locations, possibly not data points.

So we need to determine what elevation those red points are at.

But the question asks: “What is the elevation at point B?”

This implies we should read the elevation at B.

But unless B is on a labeled dot, we cannot assign an exact number.

Wait — look carefully: Is point B located exactly on a dot?

Yes! In the image, point B is superimposed on a dot that has "400" written next to it.

Similarly, point A is on a dot labeled 350, and point C is on a dot labeled 450.

Let’s verify:

- Point A: Red circle on a dot labeled 350 → So elevation = 350
- Point B: Red circle on a dot labeled 400 → So elevation = 400
- Point C: Red circle on a dot labeled 450 → So elevation = 450
- Point D: On a dot labeled 400
- Point E: On a dot labeled 500

✔ So all red points are placed on labeled dots.

Therefore:

> ✔ Elevation at Point B = 400

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✔ Question 4: If you walked from point B to point C, would you be walking downhill or uphill?

- Point B = 400
- Point C = 450

So going from 400 → 450 means increasing elevation.

➡️ You are walking uphill

> ✔ Uphill

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✔ Question 5: If you walked from point C to point E, would you be walking downhill or uphill?

- Point C = 450
- Point E = 500

From 450 → 500 = increasing elevation

➡️ You are walking uphill

> ✔ Uphill

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🧩 Final Answers:

1) What is the interval for the topographical maps below?
➤ 50 (units)

2) What is the elevation at point A?
➤ 350

3) What is the elevation at point B?
➤ 400

4) If you walked from point B to point C, would you be walking downhill or uphill?
➤ Uphill

5) If you walked from point C to point E, would you be walking downhill or uphill?
➤ Uphill

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📌 Bonus: How to Draw the Contour Lines

To complete the map:

- Connect all 350 points with smooth curves.
- Connect all 400 points.
- Connect all 450 points.
- Connect all 500 points.

These lines will show the shape of the terrain. For example:
- Areas with closely spaced contours = steep slopes.
- Areas with widely spaced contours = gentle slopes.
- Closed loops with higher values inside = hills.
- Closed loops with lower values inside = depressions.

In this case, since elevations go from 350 to 500, and they're distributed across the map, it likely shows a gently sloping hill or plateau.

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Let me know if you'd like a visual sketch or explanation of how to draw the contour lines!