Physics · KS3 Y7 · Electricity & Magnetism

Earth's magnetic field

Earth's magnetic fieldFree5:38Heddy Score 3 of 7, below the standard
Next clip

What you need to know

  • Earth’s magnetic field forms the magnetosphere, which deflects much of the solar wind.
  • Magnetic poles move over time and are different from the geographic poles.
  • Magnetic minerals in seafloor rocks provide evidence of past reversals of Earth’s magnetic field.

In this clip

Runs 5:38, from 0:07 to 5:45 of the full video.

Heddy Score3/7, Below the standard
See the seven stars
  • 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.
On YouTube

588K views · 5.86K likes · Arbor Scientific 19.6K subscribers

As reported by YouTube on 2026-11-02. Not part of the Heddy Score.
How the Heddy Score works

Why we picked it

Explains Earth’s magnetic field and uses seafloor evidence to describe reversals.

Arbor Scientific on YouTubechecked 2026-10-20

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