2024 Pearson Edexcel GCSE In Physics (1PH0) Paper 1H question paper and marking scheme (merged)

surname names


Number Number




Morning (Time: 1 hour 45 minutes) Paper

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PAPER 1
Higher Tier




Instructions

• Use black ink or ball-point pen.
centre number and candidate number.

Answer the questions in the spaces provided
– there may be more space than you need.

Information

• The total mark for this paper is 100.
– use this as a guide as to how much time to spend on each question.
In questions marked with an asterisk (*), marks will be awarded for your ability to
structure your answer logically, showing how the points you make are related or
follow on from each other where appropriate.

Advice
• Read each question carefully before you start to answer it.
• Check your answers if you have time at the end.
• Pearson Edexcel GCSE In Physics (1PH0) Paper 1H



Turn over

, Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If you change your mind about an
answer, put a line through the box and then mark your new answer with a cross .
1 (a) Nuclear fusion is a process that releases energy.

Which of these statements applies to a nuclear fusion reaction?
(1)

A it emits daughter nuclei

B it is a controlled chain reaction
C it produces radioactive waste

D it requires high temperature and pressure


(b) In the Sun, four protons start the process of nuclear fusion.
These protons combine and finally produce a helium nucleus.
The helium nucleus has a smaller mass than the four protons.

This difference in mass is converted to energy.

Four protons have a total mass of 6.69  1027 kg.
A helium nucleus has a mass of 6.64  1027 kg.

Calculate the percentage of the original mass that has been converted to energy.
(3)




percentage of mass converted to energy ........................... %




2

, (c) Figure 1 shows the spectrum of an element detected in the light from a distant
galaxy, from a nearby galaxy and from a source on Earth.
spectrum of element

from distant galaxy P

from nearby galaxy


on Earth P


400 500 600 700
wavelength in nm

Figure 1
(i) Estimate the difference between the wavelength of line P in the spectrum
from the distant galaxy and the wavelength of line P in the spectrum on Earth.
(1)




difference in wavelength = ........................... nm
(ii) Scientists have discovered that light from almost all distant galaxies has
spectral lines shifted towards the red end of the spectrum.
Explain how red shift in light, received from galaxies at different distances
from the Earth, supports the idea that the Universe is expanding.
(3)

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(Total for Question 1 = 8 marks)




3

, 2 Figure 2 shows a person on a skateboard at the top of a ramp.
At P, the person is not moving.


P


Q h


Figure 2
(a) The person rides the skateboard down the ramp from P to Q.

The gravitational potential energy of the person decreases by 980 J.
The mass of the person is 35 kg.
Calculate h, the height of the ramp.
Use g = 10 N/kg.

Use the equation
change in gravitational potential energy = m  g  h
(2)




h = .......................... m




4