IGCSE Physics 0625 | Reflection, Refraction & Diffraction Explained | From Zero to A★ with Mai Lin

Описание: Welcome back to Mai Lin’s IGCSE Physics Fast-Track Series!
In this lesson, we explore one of the most visually stunning and conceptually important topics in wave physics — Reflection, Refraction, and Diffraction.

Whether it’s your voice echoing in a room, a straw looking “bent” in a glass of water, or ocean waves curving around a harbor wall — these everyday effects are all caused by wave behavior.
Understanding how waves change when they bounce, bend, or spread out is essential for mastering not only IGCSE Physics 0625, but also real-world science from optics to acoustics.

We will build up the topic step-by-step, using clear diagrams, real examples, and exam-focused explanations to help you fully grasp how waves behave in different environments.

📘 What You’ll Learn:

What happens when a wave reflects off a surface

How and why waves refract when moving between different mediums

Why light bends toward the normal in denser media

How diffraction depends on gap width relative to wavelength

The meaning of angle of incidence = angle of reflection

How to interpret and draw wavefront diagrams (a high-scoring IGCSE skill)

Common IGCSE Paper 2 & 4 question patterns and how to describe wave behavior clearly

💡 Mai Lin’s Tip:
“Always describe waves like they are patterns, not objects.”
They don’t ‘hit’ barriers — they spread, bend, and transform depending on space and medium.
Once you learn to see wavefronts instead of just lines, everything becomes easier.

⚡ Why This Matters:
Mastering Reflection, Refraction, and Diffraction is key for later chapters on Lenses, Sound, Water waves, and Electromagnetic radiation.
This topic is frequently tested in both explanation and diagram-based questions — especially in IGCSE Paper 4 structured reasoning.

📚 Practice & Revision Links:
👉 BBC Bitesize – Wave Behaviour: https://www.bbc.co.uk/bitesize/guides...

👉 Physics Classroom – Reflection & Refraction: https://www.physicsclassroom.com/clas...

👉 GCSE Physics Ninja – Diffraction & Wavefront Questions PDF: https://www.gcsephysicsonline.com/waves

🔗 More Resources:
🌐 Website: https://mailinedu.com
(coming)
📘 Worksheets & Notes: Mai Lin’s IGCSE Physics Fast-Track Guide (coming)
🎯 Full Playlist: From Zero to A★ with Mai Lin

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