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The Ocean Floor

CONCEPTUAL
Science›Ocean Life|Ages 7—9|ID: mt_yxL1v4LuqR

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 [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?”

Prerequisites2

Show full prerequisite tree
  • What Is the Ocean? hard

    Ocean floor concept requires knowing the ocean is vast and deep

  • Ocean Depth Zones soft

    Ocean floor is the bottom of the deepest zone; zone knowledge enriches it

Unlocks2