Question

In the image shown below, what is the depth of the ocean bottom below the boat? The tan plane represents a depth of 6 meters.
boat measuring ocean depth
2 meters
3 meters
4 meters
5 meters
In the 3D map shown below, what is the depth of the area marked by the red "x"?
3D map
1 m
2 m
3 m
4 m
What is the maximum depth shown on the 3D map below?
Partial 3D map
1 m
2 m
3 m
4 m
What would the TABLE pane corresponding to the 2D MAP shown below look like?
ocean depth map

table of ocean depths

table of ocean depths

table of ocean depths

table of ocean depths
Suppose a boat needs to travel in water with a depth of at least 3 meters. Given the two-dimensional ocean depth map shown below, which of the following would be the safest path for the boat to travel, west-to-east, across this ocean?
ocean depth map
straight across at 30.4° N latitude
straight across at 30.3° N latitude
straight across at 29.5° N latitude
diagonally from the top left corner (30.4° N, 90.4° W) to the lower right corner (29.5° N, 89.5° W)

View Gizmo

Check Your Answers

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Answer 1

I can solve all of these, but I don’t have the images you’re referring to. Could you either

- attach the screenshots (or the Gizmo images), or
- type the relevant numbers/labels shown on the images (contour values, color‑legend, the grid values for the 2D map, and the depths along the latitudes)?

While you upload or describe them, here are quick instructions so you can get each answer yourself:

1) “What is the depth of the ocean bottom below the boat? The tan plane represents a depth of 6 meters.”
- Look at where the boat’s vertical (or the boat’s shadow/projection) meets the seafloor surface. Read the number or color at that point. If the tan plane is labeled 6 m, compare the boat’s point to the plane and the neighboring contour labels to determine the depth (or interpolate if it’s between contour lines).

2) “In the 3D map shown below, what is the depth of the area marked by the red ‘x’?”
- Find the red X on the 3D surface. Either the map has numeric grid labels (read the nearest grid cell) or a color legend (match the X’s color to the legend). If the X lies between two labeled depths, interpolate.

3) “What is the maximum depth shown on the 3D map below?”
- Check the legend for the largest depth value or find the deepest point on the surface and read its label. The maximum depth is the largest number in the legend or highest numeric grid cell on the map.

4) “What would the TABLE pane corresponding to the 2D MAP shown below look like?”
- The table is a numeric grid of depths corresponding to the map’s latitudes (rows) and longitudes (columns). To create it: list the latitudes down the left side, longitudes across the top, and fill each cell with the depth value shown at that grid intersection on the map. If the map shows contour shading but not every grid point’s number, use the labels or interpolate between contour lines for each grid intersection.

5) “Suppose a boat needs to travel in water with a depth of at least 3 meters… which path is safest?”
- For each candidate path (each fixed latitude or the diagonal), examine the sequence of depths along that route on the 2D map. A path is safe if every point along it is ≥ 3 m. If a path crosses shallow contours (< 3 m), it is unsafe. Choose the path that stays at or above 3 m across its whole length.

If you post the images or the map numbers (for example a table of grid depths or the color legend), I’ll give the exact answers.