Fission vs Fusion: "FiSSion = Splitting (two S's like a crack). FuSion = fuSed together." Or think: "Fission is like dividing cells (divides); Fusion is like welding (joins)."
Nuclear reactor components: Use the mnemonic FMCC: Fuel rods, Moderator, Control rods, Coolant. Each has a specific job: fuel provides the fissions, moderator slows neutrons, control rods absorb them, coolant removes heat.
Why fusion needs extreme temperature: Positive charges repel. To push two positive nuclei together, you need enormous kinetic energy (temperature). The Sun's gravity helps; on Earth we need magnetic confinement. Think: "Fusion needs to force FURY — 100 million degrees FURY."
This memory aid covers Memory Aids within Nuclear Fission & Fusion for GCSE Physics. Revise Nuclear Fission & Fusion in Atomic Structure for GCSE Physics with 13 exam-style questions and 25 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 14 of 18 in this topic. Use it for quick recall, then test yourself straight afterwards so the memory aid becomes usable in an answer.
Practice questions for Nuclear Fission & Fusion
What is nuclear fission?
Explain what is meant by a chain reaction in nuclear fission.