Question 1 of 3 · No calculator needed
Which unit is used for momentum?
Momentum is mass multiplied by velocity, so its unit is kg × m/s = kg m/s.
Pearson Edexcel International GCSE · Modular · International GCSEPhysics,
Physics,
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Specification 4XPH1. Explore a topic, practise the skill, and see where to focus next.
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Question 2 of 3 · No calculator needed
An appliance normally draws 4.2 A. Which fuse rating is most suitable?
A 5 A fuse is just above the normal current, so it will allow normal operation while disconnecting a modest overcurrent.
Question 3 of 3 · No calculator needed
Which is a balanced comparison of wind and fossil-fuel electricity generation?
Wind avoids fuel combustion during operation but depends on conditions; fossil-fuel stations can respond to demand but release greenhouse gases and pollutants.
These tiles show your answers to three questions. They are a starting point, not a mastery score or grade prediction.
Forces and motion
Correct answer: kg m/s
Momentum is mass multiplied by velocity, so its unit is kg × m/s = kg m/s.
Electricity
Correct answer: 5 A
A 5 A fuse is just above the normal current, so it will allow normal operation while disconnecting a modest overcurrent.
Energy resources and energy transfers
Correct answer: Wind has low operational greenhouse emissions but variable output; fossil fuel is dispatchable but emits carbon dioxide
Wind avoids fuel combustion during operation but depends on conditions; fossil-fuel stations can respond to demand but release greenhouse gases and pollutants.
For parents: look at the explanation together. A correct answer is encouraging; a missed answer gives you something specific to work on. Broader practice over time is needed to understand progress.
YOUR TOPIC MAP
9 areasFind your starting point.
01Forces and motion
Specification reference: 1
The total upward force still balances weight, but moment equilibrium requires the support nearer the load to carry a larger share.
Watch for: Do not substitute numbers before stating the relationship used for Forces and motion. Convert units first and explain what the calculated result means.
02Electricity
Specification reference: 2
If the live wire touches the case, the earth path carries a large fault current, causing the fuse or circuit breaker to disconnect the supply.
Watch for: Do not substitute numbers before stating the relationship used for Electricity. Convert units first and explain what the calculated result means.
03Energy resources and energy transfers
Specification reference: 3
Nuclear stations can deliver continuous high output with low operational carbon emissions, but waste management, accident risk and lifecycle costs require evaluation.
Watch for: Do not substitute numbers before stating the relationship used for Energy resources and energy transfers. Convert units first and explain what the calculated result means.
04Solids, liquids and gases: Part 1
Specification reference: 4
At the boiling point, energy increases particle potential energy by overcoming attractions; average kinetic energy and temperature stay constant during the change.
Watch for: Do not substitute numbers before stating the relationship used for Solids, liquids and gases: Part 1. Convert units first and explain what the calculated result means.
05Waves
Specification reference: 5
Motion toward the observer compresses wavefronts in front of the source, reducing observed wavelength and increasing observed frequency.
Watch for: Do not substitute numbers before stating the relationship used for Waves. Convert units first and explain what the calculated result means.
06Solids, liquids and gases: Part 2
Specification reference: 6
Higher Kelvin temperature raises average molecular kinetic energy and speed, so wall collisions occur more frequently and each produces a greater average momentum change.
Watch for: Do not substitute numbers before stating the relationship used for Solids, liquids and gases: Part 2. Convert units first and explain what the calculated result means.
07Magnetism and electromagnetism
Specification reference: 7
Soft magnetic materials respond strongly while current flows but lose most magnetism when current stops, which suits switchable electromagnets.
Watch for: Do not substitute numbers before stating the relationship used for Magnetism and electromagnetism. Convert units first and explain what the calculated result means.
08Radioactivity and particles
Specification reference: 8
The moderator slows neutrons to increase fission probability, while control rods adjust the neutron population and reaction rate by absorption.
Watch for: Do not substitute numbers before stating the relationship used for Radioactivity and particles. Convert units first and explain what the calculated result means.
09Astrophysics
Specification reference: 9
A Sun-like star expands to a red giant, sheds outer layers and leaves a white dwarf; it is not massive enough for a core-collapse supernova.
Watch for: Do not substitute numbers before stating the relationship used for Astrophysics. Convert units first and explain what the calculated result means.
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Pearson Edexcel International GCSE · Modular · International GCSE · Physics · 4XPH1
Issue 2, September 2024; current checked 28 August 2026
Source checked: 2026-08-28. The current official specification controls assessment requirements and option choices.
Can parents and students try LearningP before signing up?
Yes. This page offers three original questions from three different skills on this exact course. Each answer has an explanation, followed by a sample heatmap showing what was correct and what to revisit. No account is needed, and taster answers are not saved.
What does the three-question heatmap tell a parent?
It shows the outcome of these three answers and gives a specific skill to discuss or practise next. It is not a full assessment, a mastery score or a grade prediction. Broader practice over time is needed to understand progress.
What does the Pearson Edexcel International GCSE · Modular International GCSE Physics route cover?
LearningP currently maps 9 assessed areas for specification 4XPH1. The visible topic map below is derived from the verified route; the current official specification remains controlling.
How many LearningP questions support this route?
The verified source bank contains 189 original LearningP question records for this route. Every mapped area meets the current publication minimum and passed the latest blocker and review audit.
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No. LearningP uses official specifications and assessment materials to map content and demand, while its practice questions and explanations are independently authored.
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Use the official Pearson Edexcel International GCSE · Modular specification and assessment-resource pages linked on this page, together with information supplied by the learner’s school.
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