Edexcel IGCSE · 試験対策

Physics 試験対策

Master the Pearson Edexcel International GCSE Physics exam with examiner-grade strategies. Learn to bypass common traps in SI unit conversions, nuclear reactor definitions, and kinematics, while mastering the exact schemas required for 6-mark experimental and long-answer questions.

読了時間 5 分更新日: 2026年6月21日

試験の概要

試験数
2
満点
180
制限時間
3時間 15分
出題形式
3
試験時間配点問題数配点比率出題形式
Paper 1P: Core Physics2時間1101461.1%Multiple Choice, Short Answer / Calculation, Long Answer / Explanation
Paper 2P: Extended Physics1時間 15分70838.9%Multiple Choice, Short Answer / Calculation, Long Answer / Explanation
評価段階
987654321U
電卓の規定

A scientific or graphical calculator is permitted. Graphical calculators must be in exam mode with all stored programs and data cleared before the exam; the calculator must not be able to retrieve stored text or formulae.

  • AO1: Knowledge and understanding of physics (40%)
  • AO2: Application of knowledge and understanding, analysis and evaluation of physics (40%)
  • AO3: Experimental skills, analysis and evaluation of data and methods in physics (20%)

過去問と採点基準にもとづいて作成(2023–2025)。

電卓プログラム

Table mode for roots & turning points

Scientific calculator (e.g. Casio fx-991 series)

目的: Tabulate \(y\) across a range of \(x\) to locate sign changes (roots) and approximate maxima/minima.

使う場面: Solving or sketching a function when you want to find where its graph crosses or turns.

手順
Enter the function in TABLE mode, set the start, end and step, then read where the sign of \(y\) changes or where it peaks.

試験での注意: Allowed, but clear stored programs/data (graphical calculators in exam mode) and show the required working — unsupported calculator answers score no method marks.

Statistics mode (mean, SD & regression)

Scientific calculator (e.g. Casio fx-991 series)

目的: Read the mean \(\bar{x}\) and standard deviation directly, and the gradient/intercept (and \(r\)) of a linear regression for bivariate data.

使う場面: Any data-handling, statistics, or required-practical analysis question.

手順
Enter the data in STAT mode (1-VAR or A+BX), then recall \(\bar{x}\), \(\sigma\) or the regression coefficients.

試験での注意: Allowed, but clear stored programs/data (graphical calculators in exam mode) and show the required working — unsupported calculator answers score no method marks.

Carry exact values with Ans & memory

Scientific calculator (e.g. Casio fx-991 series)

目的: Keep full-precision intermediate values to avoid rounding errors.

使う場面: Multi-step calculations where premature rounding loses the final accuracy mark.

手順
Use Ans, STO/RCL or the M+ memory to reuse the unrounded result of each step; round only the final answer.

試験での注意: Allowed, but clear stored programs/data (graphical calculators in exam mode) and show the required working — unsupported calculator answers score no method marks.

Equation solver — to CHECK your working

Scientific calculator (e.g. Casio fx-991 series)

目的: Use the built-in EQN/SOLVE mode to verify roots of quadratics or simultaneous equations you have already solved by algebra.

使う場面: As a check only, after solving by hand.

手順
Enter the coefficients in EQN mode (or use SOLVE) and confirm they match your worked solution.

試験での注意: Allowed, but clear stored programs/data (graphical calculators in exam mode) and show the required working — unsupported calculator answers score no method marks.

よくあるミス

  1. 1high影響する配点: 2Forces, movement, shape and momentum

    Defining elastic behavior simply as 'returning to original shape' when a force is applied, omitting the critical limit condition.

    回避方法: Define elastic behavior as the ability of a material to return to its original shape and length *only after* the applied load or deforming force is removed.
  2. 2high影響する配点: 4Ideal gas molecules

    Failing to convert Celsius temperatures to Kelvin when performing gas law calculations.

    回避方法: Always add 273 to the Celsius temperature (e.g., 16°C + 273 = 289 K) before substituting values into the pressure law or Boyle's law equations.
  3. 3high影響する配点: 2Fission and fusion

    Confusing the physical roles of control rods and the moderator in a nuclear fission reactor.

    回避方法: Explicitly state that control rods *absorb* neutrons to control the reaction rate, while the moderator *slows down* fast-moving neutrons to sustain the chain reaction.
  4. 4high影響する配点: 1Forces, movement, shape and momentum

    Leaving mass values in grams rather than converting them to kilograms when calculating kinetic energy, gravitational potential energy, or momentum.

    回避方法: Check the given unit. If mass is in grams (e.g., 159 g), divide by 1000 to convert to kilograms (0.159 kg) before using physical formulas.
  5. 5high影響する配点: 2Radioactivity

    Using the word 'atoms' instead of 'nuclei' when defining nuclear fission, fusion, or radioactive decay.

    回避方法: Ensure you refer strictly to 'nuclei' or 'nucleus'. For example: 'Fission is the splitting of a heavy nucleus into two smaller daughter nuclei.'
  6. 6medium影響する配点: 2Light and sound

    In speed of sound echo experiments, failing to double the distance when using the speed equation.

    回避方法: Because sound travels to the obstacle and back, the total distance traveled is 2d. Use the formula: speed = (2 * distance) / time.
  7. 7high影響する配点: 3Electromagnetism

    Drawing crossing, overlapping, or non-parallel magnetic field lines in uniform field diagrams.

    回避方法: Draw uniform magnetic fields as straight, parallel, equally spaced lines with clear arrows pointing from North to South. Lines must never cross or touch.
  8. 8high影響する配点: 1Energy and voltage in circuits

    Leaving current values in milliamperes (mA) instead of converting them to amperes (A) in electrical equations.

    回避方法: Divide the mA value by 1000 (e.g., 2.4 mA = 0.0024 A) before substituting it into equations like V = IR or P = IV.

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