Science
Ocean Life
Conceptual
7–9 yrs
The Ocean Floor
海底地形
Description
Know that the ocean floor is not flat — it has mountains, valleys, and the deepest trenches on Earth — and that the deepest point is the Mariana Trench, deeper than Mount Everest is tall
Mastery Evidence
- State that the ocean floor has varied terrain including mountains, ridges, and trenches
- Name the Mariana Trench as the deepest point on Earth
- Compare its depth to a familiar reference like Mount Everest's height
Assessment Prompt
If your child heard that the ocean floor has mountains and valleys, could they explain that it's not flat and that the Mariana Trench is the deepest spot on Earth — deeper than Everest is tall?
