Geography · KS3 Y7 · Resources & Environment

Rocks, weathering and soils

g49Free7:05Heddy Score 3 of 7, below the standard

Plays from youtube-nocookie.com. No YouTube cookies until you press play.

What you need to know

  • Soil is a mix of weathered rock, organic matter, water and air.
  • Soil develops in layers, with dark, rich material near the top.
  • Soils take a very long time to form but can be lost quickly through erosion.
  • Climate and vegetation make soils vary greatly from place to place.

In this clip

Heddy Score3/7, Below the standard
  • Trusted source · passed. The creator's own upload, live and playable here.
  • On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
  • Spec-true · not judged yet. Accurate, and right for the current UK specification.
  • Focused · passed. One idea, short enough to watch in one go.
  • Accessible · passed. Good captions, clear sound and pictures.
  • Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
  • Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
★ passed · ☆ pending · ✕ failed
Our students

Not enough students yet

Our own students' answers. These are what move ★7 Proven.
How the Heddy Score works

Why we picked it

Detailed look at what soil is, its layers and how it varies; best for confident KS3 learners.

CrashCourse on YouTubechecked 2026-10-16