AQA GCSE 8464 C 2F QP
COMBINED SCIENCE TRIOLOGY
2024
David
, Please write clearly in block capitals.
GCSE
Centre Candidate
number number
F
COMBINED SCIENCE: TRILOGY
Surname
Forename(s)
Foundation Tier
Candidate
Tuesday
signat
11 June ure
2024 Morning Time allowed: 1 hour 15 minutes
Materials
For this paper you must have: For Examiner’s Use
a ruler
Questio Mark
a scientific calculator n
the periodic table (enclosed). 1
2
Instructions
Use black ink or black ball-point pen. 3
Pencil should only be used for drawing. 4
Fill in the boxes at the top of this page.
5
Answer all questions in the spaces provided.
If you need extra space for your answer(s), use the lined pages at the end of this 6
book. Write the question number against your answer(s). 7
Do all rough work in this book. Cross through any work you do not want to be
marked. TOTAL
In all calculations, show clearly how you work out your answer.
Information
The maximum mark for this paper is 70.
The marks for questions are shown in brackets.
You are expected to use a calculator where appropriate.
You are reminded of the need for good English and clear presentation in your answers.
*JUN24 464c2F01*
IB/M/Jun24/G4005/E7 8464/C/2F
, 2
Do not write
outside the
0 1 The Earth’s atmosphere has changed during the last 4.6 billion years. box
0 1 .1 What is the approximate percentage of nitrogen and of oxygen in the
Earth’s atmosphere today?
Draw one line from each gas to the percentage of that gas.
[2 marks]
0 1 .2 The approximate percentage of carbon dioxide in the Earth’s early atmosphere was
95%.
Which are two reasons why the percentage of carbon dioxide has decreased since the
Earth’s early atmosphere?
[2 marks]
Tick () two boxes.
Combustion of fuels
Deforestation
Dissolving in oceans
Photosynthesis
Respiration
*02
IB/M/Jun24/8464/
* C/2F
, 3
Do not write
outside the
0 1 .3 Figure 1 shows the change in the percentage of carbon dioxide in the Earth’s box
atmosphere from 1800 to 2020.
Figure 1
Describe the trend in the percentage of carbon dioxide in the Earth’s atmosphere from
1800 to 2020.
Use data from Figure 1.
[3 marks]
Turn over ►
*03
IB/M/Jun24/8464/
* C/2F
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