Failing to convert raw prefix values (e.g. milliseconds in time, millimeters in cable extension) into base SI units before performing calculations.

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.

Using nucleon number (mass number A) instead of the actual nuclear mass when calculating the specific charge of a nucleus.

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.

Failing to state that the photoelectric effect involves a precise one-to-one interaction between a single photon and a single electron.

Always explicitly state: 'One photon interacts with exactly one electron, transferring all of its energy.'

Drawing a small gradient triangle or thick, inaccurate tangents on line graphs (such as Brinell curves or motion graphs).

Draw tangents with a single, sharp pencil line and construct a large right-angled triangle spanning more than half of the tangent line length.

Assuming that a potentiometer circuit is just as energy-efficient as a simple series variable resistor circuit.

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.

AQA AS-Level · 考试技巧

Physics 7407 考试技巧

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.

阅读时间 5 分钟更新于: 2026年6月21日

试卷概览

卷数

总分

140

考试时间

3小时

题型

试卷	时间	分数	题数	比重	题型
Paper 1 (Core Theory)	1小时 30分钟	70	9	50%	Short Answer / Calculation, Level of Response Extended Writing, Structured Long Answer
Paper 2 (Practical Skills, Theory and Multiple Choice)	1小时 30分钟	70	34	50%	Data Analysis & Graphical Interpretation, Structured Calculation & Explanation, 選擇題

评级

ABCDEU

计算器规定

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%)

根据历届试题与评分标准整理（2022–2024）。

计算器程序

Graph: zeros, intersections & turning points

Graphical calculator / GDC (exam mode)

用途: Plot a function to read its roots (zeros), points of intersection, and maxima/minima.

使用时机: Checking solutions, sketching, or solving where an analytic method is hard.

步骤

Graph the function(s) and use the built-in zero, intersect and maximum/minimum tools.

考试提示: 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)

用途: Solve an equation or find a variable numerically when an algebraic route is long or implicit.

使用时机: Iterative or implicit equations, or to confirm an algebraic solution.

步骤

Use the equation/zero solver, entering the equation and a sensible starting estimate.

Numerical integration & differentiation

Graphical calculator / GDC (exam mode)

用途: Evaluate a definite integral \(\int_a^b f(x)\,dx\) or a gradient \(f'(x)\) at a point.

使用时机: Checking calculus answers, or where only a numerical value is needed.

步骤

Use the GDC's numeric integral / derivative function with the limits or the point.

Statistics & probability distributions

Graphical calculator / GDC (exam mode)

用途: 1-var/2-var statistics, linear regression, and cumulative binomial / normal / Poisson probabilities without tables.

使用时机: Statistics questions and hypothesis tests.

步骤

Enter data in the statistics editor, or use the distribution menu (binomial cdf, normal cdf, …).

常见错误

1high涉及分数: 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.
如何避免: 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.
2medium涉及分数: 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.
如何避免: 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.
3high涉及分数: 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.
如何避免: Always explicitly state: 'One photon interacts with exactly one electron, transferring all of its energy.'
4high涉及分数: 2Limitation of physical measurements
Drawing a small gradient triangle or thick, inaccurate tangents on line graphs (such as Brinell curves or motion graphs).
如何避免: Draw tangents with a single, sharp pencil line and construct a large right-angled triangle spanning more than half of the tangent line length.
5medium涉及分数: 1Current electricity
Assuming that a potentiometer circuit is just as energy-efficient as a simple series variable resistor circuit.
如何避免: 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.

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