Chemistry · KS3 Y9 · Earth & Atmosphere

Greenhouse effect & climate

Greenhouse effect & climateFree2:14Heddy Score 3 of 7, below the standard
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What you need to know

  • Greenhouse gases absorb outgoing infrared radiation and re-emit it.
  • This natural greenhouse effect keeps Earth warmer than it would otherwise be.
  • Increasing greenhouse-gas concentrations can strengthen the effect.

In this clip

Runs 2:14, from 0:31 to 2:45 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

447K views · Freesciencelessons 995K subscribers

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

Why we picked it

Clearly distinguishes the greenhouse effect from the gases that contribute to it.

Freesciencelessons on YouTubechecked 2026-10-20

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