Physics · KS3 Y8 · Waves (Light & Sound)

Reflection: angle in, angle out

Reflection: angle in, angle outFree4:50Heddy Score 3 of 7, below the standard
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What you need to know

  • The angle of incidence is measured from the normal and equals the angle of reflection.
  • A ray diagram uses a normal at right angles to the reflecting surface.
  • Smooth surfaces produce regular reflection; rough surfaces scatter reflected rays.

In this clip

Runs 4:50, from 0:24 to 5:14 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

747K views · 9.87K likes · Cognito 1.37M subscribers

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

Why we picked it

Shows how to construct reflection ray diagrams and compare regular with diffuse reflection.

Cognito on YouTubechecked 2026-10-20

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