Chapter 27, Problem 7RQ

To determine

The detailed mapping of the oceans reveal about their topography

Answer to Problem 7RQ

In the detailed mapping of oceans, it revealed the deepest part of oceans

Explanation of Solution

By the Harry Hess, the detailed mapping of the ocean revealed huge mountain ranges running down the middle of Atlantic, Pacific and Indian oceans. For example, Mid-Atlantic Ridge stretches along center of the Atlantic Ocean basin Parallel to European, American and African coastlines having the length of $19,312\text{km}$.

Mapping of the ocean floor also led to the discovery of the deep ocean trenches near some continental landmass. So it is revealed that the deepest part of the ocean is actually near some continents while some shallowest water are in the middle of the oceans.

Conclusion:

Therefore, in the detailed mapping of oceans, it revealed the deepest part of oceans.