"Explain" questions — OCR GCSE Physics A: Gateway Science (J249)
92 questions · physics · View as Markdown
How to answer
WHAT + WHY. Every point paired with a because. Structure: X happens because Y. This causes Z because … Assessment Objective: AO2. Every "explain" answer on this spec is marked against exactly this pattern.
Sample questions
- Explain why gamma radiation is more hazardous to living cells than alpha radiation when a radioactive source is located …
- A student connects a battery, a lamp, and a switch in a series circuit. The student then adds a second identical lamp in…
- Explain how red-shift and cosmic microwave background radiation (CMBR) each provide evidence for the Big Bang Theory.
- A homeowner installs cavity wall insulation in their house. Explain how cavity wall insulation reduces the rate at which…
- A chocolate manufacturer heats solid chocolate in a large vat until it melts completely. Once all the chocolate has melt…
- A ice skater glides across a smooth ice rink at a constant velocity. She then pushes off a barrier at the edge of the ri…
- A student heats a block of ice at 0 °C until it completely melts into water at 0 °C. Explain, using the particle model,…
- A skydiver jumps from an aircraft and falls towards the ground. Initially, the skydiver accelerates rapidly. After some …