A comprehensive exam-tips guide for AQA AS Level Physics 7407, covering unit conversion and power-of-ten traps, accurate graph reading and tangent drawing, structuring 'Level of Response' extended-writing questions, practical-skills and uncertainty handling, and high-yield command-word strategy drawn from examiner reports.
อ่าน 5 นาทีอัปเดตเมื่อ: 21 มิ.ย. 2569
ภาพรวมข้อสอบ
จำนวนฉบับ
2
คะแนนเต็ม
140
เวลาสอบ
3ชม.
ประเภทคำถาม
4
ฉบับ
เวลา
คะแนน
จำนวนข้อ
น้ำหนักคะแนน
ประเภทคำถาม
Paper 1 (Core Theory)
1ชม. 30นาที
70
9
50%
Short Answer / Calculation, Level of Response Extended Writing, Structured Long Answer
Paper 2 (Practical Skills, Theory and Multiple Choice)
A scientific or graphical calculator that meets JCQ regulations may be used (some GCSE Mathematics and Science papers are non-calculator). Graphical calculators must be set to exam mode; you must clear any stored programs, notes or data before the exam, and the calculator must not be able to retrieve stored text or formulae.
AO1: Knowledge and understanding of scientific ideas, processes, techniques and procedures (35%)
AO2: Application of knowledge and understanding of scientific ideas, processes, techniques and procedures (40%)
AO3: Analysis, interpretation and evaluation of scientific information, ideas and evidence (25%)
วัตถุประสงค์: Plot a function to read its roots (zeros), points of intersection, and maxima/minima.
ใช้เมื่อใด: Checking solutions, sketching, or solving where an analytic method is hard.
ขั้นตอน
Graph the function(s) and use the built-in zero, intersect and maximum/minimum tools.
ข้อควรระวังในการสอบ: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
Numerical equation solver
Graphical calculator / GDC (exam mode)
วัตถุประสงค์: Solve an equation or find a variable numerically when an algebraic route is long or implicit.
ใช้เมื่อใด: Iterative or implicit equations, or to confirm an algebraic solution.
ขั้นตอน
Use the equation/zero solver, entering the equation and a sensible starting estimate.
ข้อควรระวังในการสอบ: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
Numerical integration & differentiation
Graphical calculator / GDC (exam mode)
วัตถุประสงค์: Evaluate a definite integral \(\int_a^b f(x)\,dx\) or a gradient \(f'(x)\) at a point.
ใช้เมื่อใด: Checking calculus answers, or where only a numerical value is needed.
ขั้นตอน
Use the GDC's numeric integral / derivative function with the limits or the point.
ข้อควรระวังในการสอบ: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
Statistics & probability distributions
Graphical calculator / GDC (exam mode)
วัตถุประสงค์: 1-var/2-var statistics, linear regression, and cumulative binomial / normal / Poisson probabilities without tables.
ใช้เมื่อใด: Statistics questions and hypothesis tests.
ขั้นตอน
Enter data in the statistics editor, or use the distribution menu (binomial cdf, normal cdf, …).
ข้อควรระวังในการสอบ: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
ข้อผิดพลาดที่พบบ่อย
1highคะแนนที่เกี่ยวข้อง: 2Limitation of physical measurements
Failing to convert raw prefix values (e.g. milliseconds in time, millimeters in cable extension) into base SI units before performing calculations.
วิธีหลีกเลี่ยง: List all variables with their basic SI units (e.g., convert ms to s, mm to m) as the absolute first step of any calculation.
2mediumคะแนนที่เกี่ยวข้อง: 1Use of SI units and their prefixes
Using nucleon number (mass number A) instead of the actual nuclear mass when calculating the specific charge of a nucleus.
วิธีหลีกเลี่ยง: Multiply the nucleon number by the atomic mass unit (\(1.66 \times 10^{-27}\text{ kg}\)) or sum the masses of protons and neutrons to get the actual nuclear mass in kilograms.
3highคะแนนที่เกี่ยวข้อง: 1Electromagnetic radiation and quantum phenomena
Failing to state that the photoelectric effect involves a precise one-to-one interaction between a single photon and a single electron.
วิธีหลีกเลี่ยง: Always explicitly state: 'One photon interacts with exactly one electron, transferring all of its energy.'
4highคะแนนที่เกี่ยวข้อง: 2Limitation of physical measurements
Drawing a small gradient triangle or thick, inaccurate tangents on line graphs (such as Brinell curves or motion graphs).
วิธีหลีกเลี่ยง: Draw tangents with a single, sharp pencil line and construct a large right-angled triangle spanning more than half of the tangent line length.
5mediumคะแนนที่เกี่ยวข้อง: 1Current electricity
Assuming that a potentiometer circuit is just as energy-efficient as a simple series variable resistor circuit.
วิธีหลีกเลี่ยง: Remember that potentiometers always have current flowing through the entire track to the negative terminal, creating continuous power dissipation even when the output voltage is zero.