LuduminaWA-09 · WA-U3 · Planned
Applications, hazards and dose evidence
Learning objectives
Match every specified EM group to applications; evaluate supplied exposure data; H: explain suitability.
8463 §§4.6.2.3–4.6.2.4 / 8464 §§6.6.2.3–6.6.2.4
DfE single-science pp.37–39 / Combined pp.32–33. Evidence checked 30 September–1 October 2026. Skills: WS1.4,1.5,3.5; MS1c,2c.
Needs firstWA-08; AT-03 for nuclear link
Explanation
Applications exploit how waves interact with matter. Exposure risk depends on radiation type and dose; ionising radiation can damage cells. A given dataset supports a specific comparison, not a universal safety conclusion or a clinical recommendation.
Concepts, equations and units: Radio broadcast; microwave communications/cooking; IR heaters/cameras; visible fibre optics; UV lamps/tanning; X/gamma imaging/treatment; Sv/mSv supplied units, not recall requirement.
Prediction, demonstration and game exercise
Predict, observe, explain
Compare penetration/absorption in schematic materials and model exposure data; identify gamma nuclear origin.
Planned learner game exercise
Design a communications/imaging toolkit and reject unsafe exposure choices using provided evidence.
Independent practice
Three risk-data questions and two application explanations; H links physical property to use.
Original practice example · Shared
A supplied exposure table lists 0.002 Sv. Convert it to mSv.
Show working and model answer
Working / reasoning
1 Sv = 1000 mSv; 0.002 × 1000.
Answer
2 mSv. The dose unit is supplied for interpretation, not a recall requirement here.
Exit check and success criteria
At least one accurate use per band, consistent dose conversion and evidence-based risk comparison.
During practice, compare the prediction with evidence and give an error-specific prompt. The exit item uses a fresh context or fresh values, answered independently.
Misconceptions, practical links and mastery
Check these misconceptions
All radiation is radioactive; non-ionising means harmless at every dose; dose and activity are the same quantity.
Practical preparation
Source-based risk analysis; no learner exposure experiments.
Virtual preparation and revision only. Required hands-on activities and school records remain separate.
Proposed mastery
0: not yet evidenced. 1: supported. 2: independent exit criteria met. 3: successful changed-context transfer. Advance at 2; revisit with fresh retrieval. These are not GCSE grades.