Mark Scheme (Results)
Summer 2024
Pearson Edexcel GCSE
In Physics (1PH0)
Paper 1H
,General Marking Guidance
• All candidates must receive the same treatment. Examiners
must mark the first candidate in exactly the same way as
they mark the last.
• Mark schemes should be applied positively. Candidates
must be rewarded for what they have shown they can do
rather than penalised for omissions.
• Examiners should mark according to the mark scheme not
according to their perception of where the grade boundaries
may lie.
• There is no ceiling on achievement. All marks on the mark
scheme should be used appropriately.
• All the marks on the mark scheme are designed to be
awarded. Examiners should always award full marks if
deserved, i.e. if the answer matches the mark
scheme. Examiners should also be prepared to award zero
marks if the candidate’s response is not worthy of credit
according to the mark scheme.
• Where some judgement is required, mark schemes will
provide the principles by which marks will be awarded and
exemplification may be limited.
• When examiners are in doubt regarding the application of
the mark scheme to a candidate’s response, the team leader
must be consulted.
• Crossed out work should be marked UNLESS the candidate
has replaced it with an alternative response.
,Questio Answer Mark
n
1(a) D it requires high temperature and pressure 1
AO1.1
A no emission of daughter nuclei B not a chain
reaction
C does not produce radioactive waste
Questio Answer Additional Mark
n guidance
1(b) accept negative mass 3
difference throughout AO2.1
subtraction (1)
6.69 x 10-27 - 6.64 x 10-27
OR
0.05 (x 10-27)
OR
5.0 (x 10 -29)
use of % (1) accept use of
5.0 x 10(-29) x 100 0.05 x 10-27
6.69 x 10-27 6.64 x 10-27
evaluation (1)
0.75 % 0.75/0.747/0.753 to
any other power of
10 scores 2 marks
6.64 x 10-27 (x100%)
6.69 x 10-27
or
99% or 0.99 scores 1
mark
award full marks for
the correct answer
without working
, Question Answer Additional Mark
guidance
1 (c) (i) 50-70 (nm) inclusive 1
AO1.2
Question Answer Additional Mark
guidance
1 (c)(ii) explanation linking 3
AO1.1
(red shift means) galaxies must galaxies getting
be moving away from Earth /us further apart
(1)
ORA
more distant galaxies have
bigger red shift (1)
more distant galaxies moving
faster (1)
Total Question 1 = 8 marks
Summer 2024
Pearson Edexcel GCSE
In Physics (1PH0)
Paper 1H
,General Marking Guidance
• All candidates must receive the same treatment. Examiners
must mark the first candidate in exactly the same way as
they mark the last.
• Mark schemes should be applied positively. Candidates
must be rewarded for what they have shown they can do
rather than penalised for omissions.
• Examiners should mark according to the mark scheme not
according to their perception of where the grade boundaries
may lie.
• There is no ceiling on achievement. All marks on the mark
scheme should be used appropriately.
• All the marks on the mark scheme are designed to be
awarded. Examiners should always award full marks if
deserved, i.e. if the answer matches the mark
scheme. Examiners should also be prepared to award zero
marks if the candidate’s response is not worthy of credit
according to the mark scheme.
• Where some judgement is required, mark schemes will
provide the principles by which marks will be awarded and
exemplification may be limited.
• When examiners are in doubt regarding the application of
the mark scheme to a candidate’s response, the team leader
must be consulted.
• Crossed out work should be marked UNLESS the candidate
has replaced it with an alternative response.
,Questio Answer Mark
n
1(a) D it requires high temperature and pressure 1
AO1.1
A no emission of daughter nuclei B not a chain
reaction
C does not produce radioactive waste
Questio Answer Additional Mark
n guidance
1(b) accept negative mass 3
difference throughout AO2.1
subtraction (1)
6.69 x 10-27 - 6.64 x 10-27
OR
0.05 (x 10-27)
OR
5.0 (x 10 -29)
use of % (1) accept use of
5.0 x 10(-29) x 100 0.05 x 10-27
6.69 x 10-27 6.64 x 10-27
evaluation (1)
0.75 % 0.75/0.747/0.753 to
any other power of
10 scores 2 marks
6.64 x 10-27 (x100%)
6.69 x 10-27
or
99% or 0.99 scores 1
mark
award full marks for
the correct answer
without working
, Question Answer Additional Mark
guidance
1 (c) (i) 50-70 (nm) inclusive 1
AO1.2
Question Answer Additional Mark
guidance
1 (c)(ii) explanation linking 3
AO1.1
(red shift means) galaxies must galaxies getting
be moving away from Earth /us further apart
(1)
ORA
more distant galaxies have
bigger red shift (1)
more distant galaxies moving
faster (1)
Total Question 1 = 8 marks
