Summary of Containment | AI Learning Guide

In summary, the ocean does not drain because it sits in a massive, physical depression called an ocean basin. This basin is formed by tectonic plates and is lined with dense, thick rock. While gravity pulls water down, there is no hole for it to fall through. In the next chapter, we will investigate the specific layers of rock that make up this basin floor, starting with sediments and moving down to igneous rock.

0:00 / 0:00

Auto-play

Key Takeaways

We have established that the ocean is held by physical boundaries. The ocean basin is a tectonic depression, deeper than continents are high. The crust beneath the ocean is distinct from continental crust. These factors create a stable container that prevents water from simply flowing away.

Looking Ahead

Now that we know the ocean is in a physical basin, the next question is: what is that basin made of? In the next chapter, we will dive into the layered structure of the seafloor to see if the materials themselves could allow water to escape.