IGCSE Physics: Convection | Edexcel Modular | Unit 3 | L4

IGCSE Physics: Convection | Edexcel Modular | Unit 3 | L4

This lesson covers spec points 3.6 and 3.7 — describing how thermal energy is
transferred by convection in fluids and explaining the role of convection in
everyday phenomena.

PowerPoint includes:
• Retrieval starter reviewing conduction from L3
• Direct Instruction (I Do) — convection defined; density change mechanism
explained step by step (heat → expand → less dense → rise → cool → sink);
convection current defined; why convection cannot occur in solids explained;
animated diagram of convection in a beaker; real-life examples introduced
• Guided Practice (We Do) — three contextualised scenarios: sea breezes in
Doha (with keywords: air expands, density, convection current); heating a
room with a radiator; mine shaft ventilation with fires; each with a
supporting diagram
• Independent Practice (You Do) — activity sheet with exam-style questions
• Review and Reflect — MCQs and exit ticket

Activity Sheet includes:
• 10 exam-style questions progressing from defining convection and stating why
it cannot occur in solids, through mechanism explanation, to real-life
application contexts including kettles, hot water tanks, swimming pools and
air conditioning in Qatar
• Ends with a compare question linking conduction and convection
• Full mark scheme for teacher use