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Working-out in Physics AS-level (AQA) watch

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    How rigid are the marks allocated for working out in the AQA papers? For example, I did a Physics Unit 1 paper and I worked out the specific charge of a nucleus by using:

    specific charge of a proton × number of protons divided by
    mass of nucleon × number of nucelons

    The mark scheme only showed one (different) method which involved working out charge ratios and for a three-mark question only one was for the answer. Essentially, I got the right answer but only gained a third of the marks.

    It's happened in other papers; sometimes I just do mental calculations and miss out on marks by assuming the answer was the only important thing. Nevertheless, this is solvable by just showing the working; the issue with the previous question is I used a different, unrecognised method.

    Do the examiners allocate marks at their discretion? Is there a more full mark scheme like with maths with a range of different solutions?

    It seems silly that they'd only accept a single method.
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    I think mainly if you'e shown a reasonable method they'll give you the marks. If you dont show any working at all and get the right answer unless it says show your calculation you'll usually get full marks but if you get it wrong you'll lose all of them
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    (Original post by oriane89)
    I think mainly if you'e shown a reasonable method they'll give you the marks. If you dont show any working at all and get the right answer unless it says show your calculation you'll usually get full marks but if you get it wrong you'll lose all of them
    I see, that makes sense.

    Cheers for the reply.
 
 
 

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