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.
อ่าน 5 นาทีอัปเดตเมื่อ: 21 มิ.ย. 2569
ภาพรวมข้อสอบ
จำนวนฉบับ
2
คะแนนเต็ม
180
เวลาสอบ
3ชม. 15นาที
ประเภทคำถาม
3
ฉบับ
เวลา
คะแนน
จำนวนข้อ
น้ำหนักคะแนน
ประเภทคำถาม
Paper 1P: Core Physics
2ชม.
110
14
61.1%
Multiple Choice, Short Answer / Calculation, Long Answer / Explanation
Paper 2P: Extended Physics
1ชม. 15นาที
70
8
38.9%
Multiple Choice, Short Answer / Calculation, Long Answer / Explanation
เกณฑ์เกรด
987654321U
ข้อกำหนดเครื่องคิดเลข
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%)
วัตถุประสงค์: Tabulate \(y\) across a range of \(x\) to locate sign changes (roots) and approximate maxima/minima.
ใช้เมื่อใด: Solving or sketching a function when you want to find where its graph crosses or turns.
ขั้นตอน
Enter the function in TABLE mode, set the start, end and step, then read where the sign of \(y\) changes or where it peaks.
ข้อควรระวังในการสอบ: 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)
วัตถุประสงค์: Read the mean \(\bar{x}\) and standard deviation directly, and the gradient/intercept (and \(r\)) of a linear regression for bivariate data.
ใช้เมื่อใด: Any data-handling, statistics, or required-practical analysis question.
ขั้นตอน
Enter the data in STAT mode (1-VAR or A+BX), then recall \(\bar{x}\), \(\sigma\) or the regression coefficients.
ข้อควรระวังในการสอบ: 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)
วัตถุประสงค์: Keep full-precision intermediate values to avoid rounding errors.
ใช้เมื่อใด: Multi-step calculations where premature rounding loses the final accuracy mark.
ขั้นตอน
Use Ans, STO/RCL or the M+ memory to reuse the unrounded result of each step; round only the final answer.
ข้อควรระวังในการสอบ: 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)
วัตถุประสงค์: Use the built-in EQN/SOLVE mode to verify roots of quadratics or simultaneous equations you have already solved by algebra.
ใช้เมื่อใด: As a check only, after solving by hand.
ขั้นตอน
Enter the coefficients in EQN mode (or use SOLVE) and confirm they match your worked solution.
ข้อควรระวังในการสอบ: Allowed, but clear stored programs/data (graphical calculators in exam mode) and show the required working — unsupported calculator answers score no method marks.
ข้อผิดพลาดที่พบบ่อย
1highคะแนนที่เกี่ยวข้อง: 2Forces, movement, shape and momentum
Defining elastic behavior simply as 'returning to original shape' when a force is applied, omitting the critical limit condition.
วิธีหลีกเลี่ยง: 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.
2highคะแนนที่เกี่ยวข้อง: 4Ideal gas molecules
Failing to convert Celsius temperatures to Kelvin when performing gas law calculations.
วิธีหลีกเลี่ยง: 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.
3highคะแนนที่เกี่ยวข้อง: 2Fission and fusion
Confusing the physical roles of control rods and the moderator in a nuclear fission reactor.
วิธีหลีกเลี่ยง: 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.
4highคะแนนที่เกี่ยวข้อง: 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.
วิธีหลีกเลี่ยง: 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.
5highคะแนนที่เกี่ยวข้อง: 2Radioactivity
Using the word 'atoms' instead of 'nuclei' when defining nuclear fission, fusion, or radioactive decay.
วิธีหลีกเลี่ยง: Ensure you refer strictly to 'nuclei' or 'nucleus'. For example: 'Fission is the splitting of a heavy nucleus into two smaller daughter nuclei.'
6mediumคะแนนที่เกี่ยวข้อง: 2Light and sound
In speed of sound echo experiments, failing to double the distance when using the speed equation.
วิธีหลีกเลี่ยง: Because sound travels to the obstacle and back, the total distance traveled is 2d. Use the formula: speed = (2 * distance) / time.
7highคะแนนที่เกี่ยวข้อง: 3Electromagnetism
Drawing crossing, overlapping, or non-parallel magnetic field lines in uniform field diagrams.
วิธีหลีกเลี่ยง: Draw uniform magnetic fields as straight, parallel, equally spaced lines with clear arrows pointing from North to South. Lines must never cross or touch.
8highคะแนนที่เกี่ยวข้อง: 1Energy and voltage in circuits
Leaving current values in milliamperes (mA) instead of converting them to amperes (A) in electrical equations.
วิธีหลีกเลี่ยง: 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.