Edexcel Salters Horners Physics Coursework

Presentation on theme: "Materials Science within AS and A-level Physics"— Presentation transcript:

1 Materials Science within AS and A-level Physics
Elizabeth SwinbankDirector, Salters Horners Advanced PhysicsUniversity of York

2 Changes to AS/A-level physics
All AS and A-level specifications (syllabuses) are changing for first teaching in September 2008All the new physics specs have4 content assessment units (2 AS, 2 A2)2 coursework assessment units (1 AS, 1 A2)a requirement to address ‘how science works’Most havelittle or no optional contentSee IOP summary for details of assessment structures

3 Materials Science content is predominantly in AS
AS core content includesresistivityrefractive indexAt AS, nearly all specs require mechanical propertiesHooke’s lawYoung modulusstress-strain graphselastic and plastic behaviourmeaning of terms brittle, hard etc

4 A2 core content includes
specific heat capacityThere is essentially no other Materials Sciencecontent in any A2 physics specificationSee Appendix for details of individual spec requirements

5 Examples of content requirements
Draw force-extension, force-compression, and tensile/compressive stress-strain graphs. Identify the limit ofproportionality, elastic limit and yield point (Edexcel)One method of measuring Young modulus andfracture stress (OCR B)Describe how to determine the resistivity of a metalwire experimentally (WJEC)Refractive index of a substance is given by n = c/v(AQA B)

6 How Science WorksNature and limitations of scientific knowledge (hypothesis and prediction, data and explanation, modelling, the scientific community)Scientific enquiry (experimental skills, data handling, mathematical skills)Communication (scientific language, presentation of data)Applications and implications (decision making, risk, ethics)

7 CourseworkAll specifications require practical coursework at AS and A2.Students undertake a practical task (or tasks) that are either set by the awarding body or devised by their teachers.Typically, the exercise takes about 1 hour to complete.The exact requirements vary between specifications.

8 Examples of AS practical coursework requirements
Use and be familiar with standard laboratory equipment(eg electric meters… vernier callipers … newtonmeters...electronic balance …) (AQA)Take measurements and record data showing awarenessof the limits of accuracy … (WJEC)Analyse and interpret data to provide evidence,recognising correlations and causal relationships(OCR A)

9 Visit or case studyThe Edexcel specification for AS requires a report of a visit or case study.The practical task should be linked to the visit/case study.ExampleVisit a biscuit factory: observe mechanical testing of products for quality controlPractical: measure elastic modulus of ice-cream wafer

10 Materials activities from Salters Horners Advanced Physics (Edexcel)
Context-led courseFood industry: product development and quality controlSpare part surgery: designer materials

11 Eat sweets to establish the meaning of technical terms brittle, hard, etc

12 Plot force-extension graphs for strawberry laces

13 Measure Brinnell hardness of mints

14 Measure breaking stress of model bone

15 Determine Young modulus of UHMWPE
for use in hip replacements

16 A blueprint for the development of Materials Science resources
Focus on mechanical properties for AS levelInclude electrical, thermal and optical propertiesAddress ‘how science works’Develop experimental skillsPut activities in authentic (and novel) contexts

17 AppendixMaterials Science elements of the new AS and A-level physics specificationsAQA AAQA B (Physics in Context)Edexcel (includes SHAP)OCR AOCR B (Advancing Physics)WJEC

18 AQA A resistivity Unit 1 Particles, Quantum Phenomena and Electricity
superconductivityUnit 2 Mechanics, Materials and WavesdensityHooke’s lawtensile stress and strainenergy storedbreaking stressplastic behaviourfracture and brittlenessstress-strain curvesYoung modulus

19 AQA A specific heat capacity Unit 5 Nuclear Physics, Thermal Physics
and an Optional Topicspecific heat capacity

20 AQA B (Physics in context)
Unit 1 Harmony and Structure in the Universerefractive indexUnit 2 Physics Keeps us Goingelastic potential energystiffness (of a sample)thermal conductivityU valuesresistivitysuperconductivityUnit 5 Energy Under the Microscopespecific heat capacity

21 Edexcel (SHAP) density Unit 1 Physics on the go
laminar and turbulent flowviscosity and Stokes’s lawHooke’s lawcompressive and tensile stress and strainstress-strain graphsYoung moduluselastic and plastic behaviourbreaking stressenergy storedmeaning of brittle, hard, ductile, malleable, stiff, tough

22 Edexcel (SHAP) resistivity Unit 2 Physics at work
temperature and resistancerefractive indexUnit 5 Physics from creation to collapsespecific heat capacity

23 OCR A tensile and compressive deformation Unit 1 Mechanics Hooke’s law
stored energystress and strainYoung modulusbreaking stresselastic and plastic deformationstress-strain graphsUnit 2 Electrons, Waves and Photonsresistivitytemperature and resistancesuperconductivity

24 OCR B (Advancing Physics)
Unit 1 Physics in action: designer materialsmechanical behaviourdeformation and fracturestress, strainYoung modulusstiff, elastic, plastic, ductile, hard, brittle, toughstress-strain graphssize and spacing of particlesmetals, ceramics, polymers, compositeselectrical behaviourmetals, semiconductors, insulatorsresistivity, conductivity

25 OCR B (Advancing Physics)
Unit 4 Rise and Fall of the Clockwork Universespecific heat capacity

26 WJEC (Wales) stored energy Unit 1 Motion, Energy and Charge density
Hooke’s lawfrictionviscosityresistivitysuperconductivityUnit 2 Waves and Particlesrefractive index

27 WJEC (Wales) Unit 4 Oscillations and Fields stiffness (of a sample)
specific heat capacity

This Wikibook is about A-level Physics, designed to follow the Edexcel (Salters Horners) syllabus, but is not endorsed by Edexcel. It will hopefully be useful as a revision guide or for alternative explanations to the ones in your textbook or from your tutor.

AS Units[edit]

PSA1: Physics at work, rest and play (6751)[edit]

  • Higher, Faster, Stronger (HFS)
  • Good Enough to Eat (EAT)
  • Spare Part Surgery (SUR)

PSA2: Physics for life (6752)[edit]

  • Digging Up the Past (DIG)
  • Technology in Space (SPC)
  • Sound of Music (MUS)

PSA3: Coursework (6753)[edit]

  • Experimental skills
  • Visit

A2 Units[edit]

PSA4: Physics on the Move (6754)[edit]

  • Transport on Track (TRA)
  • The Medium is the Message (MDM)
  • Probing the Heart of Matter (PRO)

PSA5i: Coursework (6755/01)[edit]

PSA5ii: Physics from creation to collapse (6755/02)[edit]

  • Build or Bust? (BLD)
  • Reach for the Stars (STA)

PSA6: Synoptic test (6756)[edit]

External links[edit]

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