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AQA A LEVEL 7408 3A MS 2020.docx
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AQA A LEVEL 7408 3A MS
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A-levelPHYSICS
7408/3A
Paper 3 Section A
I I I
Mark scheme
I
June 2020
I
Version: I1.0 IFinal
*206A7408/3A/MS*
, MARK I SCHEME I – I A-LEVEL I PHYSICS I – I 7408/3A I – I OCTOBER
I 2020
Mark Ischemes Iare Iprepared Iby Ithe ILead IAssessment IWriter Iand Iconsidered, Itogether Iwith
Ithe Irelevant Iquestions, Iby Ia Ipanel Iof Isubject Iteachers. IThis Imark Ischeme Iincludes Iany
Iamendments Imade Iat Ithe Istandardisation Ievents Iwhich Iall Iassociates Iparticipate Iin Iand Iis
Ithe Ischeme Iwhich Iwas Iused Iby Ithem Iin Ithis Iexamination. IThe Istandardisation Iprocess
Iensures Ithat Ithe Imark Ischeme Icovers Ithe Istudents’ Iresponses Ito Iquestions Iand Ithat Ievery
Iassociate Iunderstands Iand Iapplies Iit Iin Ithe Isame Icorrect Iway.
As Ipreparation Ifor Istandardisation Ieach Iassociate Ianalyses Ia Inumber Iof Istudents’ Iscripts.
IAlternative Ianswers Inot Ialready Icovered Iby Ithe Imark Ischeme Iare Idiscussed Iand Ilegislated
Ifor. IIf, Iafter Ithe Istandardisation Iprocess, Iassociates Iencounter Iunusual Ianswers Iwhich Ihave
Inot Ibeen Iraised Ithey Iare Irequired Ito Irefer Ithese Ito Ithe ILead IExaminer.
It Imust Ibe Istressed Ithat Ia Imark Ischeme Iis Ia Iworking Idocument, Iin Imany Icases Ifurther
Ideveloped Iand Iexpanded Ion Ithe Ibasis Iof Istudents’ Ireactions Ito Ia Iparticular Ipaper.
IAssumptions Iabout Ifuture Imark Ischemes Ion Ithe Ibasis Iof Ione Iyear’s Idocument Ishould Ibe
Iavoided; Iwhilst Ithe Iguiding Iprinciples Iof Iassessment Iremain Iconstant, Idetails Iwill Ichange,
Idepending Ion Ithe Icontent Iof Ia Iparticular Iexamination Ipaper.
Further Icopies Iof Ithis Imark Ischeme Iare Iavailable Ifrom Iaqa.org.uk
Copyright Iinformation
AQA Iretains Ithe Icopyright Ion Iall Iits Ipublications. IHowever, Iregistered Ischools/colleges Ifor IAQA Iare Ipermitted Ito Icopy Imaterial Ifrom Ithis
Ibooklet Ifor Itheir Iown Iinternal Iuse, Iwith Ithe Ifollowing Iimportant Iexception: IAQA Icannot Igive Ipermission Ito Ischools/colleges Ito Iphotocopy
Iany Imaterial Ithat Iis Iacknowledged Ito Ia Ithird Iparty Ieven Ifor Iinternal Iuse Iwithin Ithe Icentre.
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, MARK I SCHEME I – I A-LEVEL I PHYSICS I – I 7408/3A I – I OCTOBER
I 2020
Copyright I© I2020 IAQA Iand Iits Ilicensors. I All Irights Ireserved.
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, MARK I SCHEME I – I A-LEVEL I PHYSICS I – I 7408/3A I – I OCTOBER
I 2020
Physics - Mark scheme instructions to examiners
I I I I I I
1. General
The Imark Ischeme Ifor Ieach Iquestion Ishows:
the Imarks Iavailable Ifor Ieach Ipart Iof Ithe Iquestion
the Itotal Imarks Iavailable Ifor Ithe Iquestion
the Itypical Ianswer Ior Ianswers Iwhich Iare Iexpected
extra Iinformation Ito Ihelp Ithe IExaminer Imake Ihis Ior Iher Ijudgement Iand Ihelp Ito Idelineate
Iwhat Iis Iacceptable Ior Inot Iworthy Iof Icredit Ior, Iin Idiscursive Ianswers, Ito Igive Ian Ioverview
Iof Ithe Iarea Iin Iwhich Ia Imark Ior Imarks Imay Ibe Iawarded.
The Iextra Iinformation Iis Ialigned Ito Ithe Iappropriate Ianswer Iin Ithe Ileft-hand Ipart Iof Ithe Imark
Ischeme Iand Ishould Ionly Ibe Iapplied Ito Ithat Iitem Iin Ithe Imark Ischeme.
At Ithe Ibeginning Iof Ia Ipart Iof Ia Iquestion Ia Ireminder Imay Ibe Igiven, Ifor Iexample: Iwhere
Iconsequential Imarking Ineeds Ito Ibe Iconsidered Iin Ia Icalculation; Ior Ithe Ianswer Imay Ibe Ion
Ithe Idiagram Ior Iat Ia Idifferent Iplace Ion Ithe Iscript.
In Igeneral Ithe Iright-hand Iside Iof Ithe Imark Ischeme Iis Ithere Ito Iprovide Ithose Iextra Idetails
Iwhich Iconfuse Ithe Imain Ipart Iof Ithe Imark Ischeme Iyet Imay Ibe Ihelpful Iin Iensuring Ithat
Imarking Iis Istraightforward Iand Iconsistent.
2. Emboldening
2.1 In Ia Ilist Iof Iacceptable Ianswers Iwhere Imore Ithan Ione Imark Iis Iavailable I‘any Itwo
Ifrom’ Iis Iused, Iwith Ithe Inumber Iof Imarks Iemboldened. I Each Iof Ithe Ifollowing Ibullet
Ipoints Iis Ia Ipotential Imark.
2.2 A Ibold Iand Iis Iused Ito Iindicate Ithat Iboth Iparts Iof Ithe Ianswer Iare Irequired Ito Iaward Ithe
Imark.
2.3 Alternative Ianswers Iacceptable Ifor Ia Imark Iare Iindicated Iby Ithe Iuse Iof Ior. IDifferent
Iterms Iin Ithe Imark Ischeme Iare Ishown Iby Ia I/ I; Ieg Iallow Ismooth I/ Ifree Imovement.
3. Marking points I
3.1 Marking of lists I I
This Iapplies Ito Iquestions Irequiring Ia Iset Inumber Iof Iresponses, Ibut Ifor Iwhich Icandidates Ihave
Iprovided Iextra Iresponses. I The Igeneral Iprinciple Ito Ibe Ifollowed Iin Isuch Ia Isituation Iis Ithat
I‘right I+ Iwrong I= Iwrong’.
Each Ierror I/ Icontradiction Inegates Ieach Icorrect Iresponse. ISo, Iif Ithe Inumber Iof Ierrors I/
Icontradictions Iequals Ior Iexceeds Ithe Inumber Iof Imarks Iavailable Ifor Ithe Iquestion, Ino Imarks
Ican Ibe Iawarded.
However, Iresponses Iconsidered Ito Ibe Ineutral I(often Iprefaced Iby I‘Ignore’ Iin Ithe Imark
Ischeme) Iare Inot Ipenalised.
3.2 Marking procedure for calculations
I I I
Full Imarks Ican Iusually Ibe Igiven Ifor Ia Icorrect Inumerical Ianswer Iwithout Iworking Ishown
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