Core finding

28 understand how to use the relationships • (tensile or compressive)… is the most frequently assessed subtopic in Materials, with 62 topic questions and 165 marks across 23 papers. 25a be able to use the equation for viscous drag (Stokes'… follows with 60 topic questions and 158 marks. The topic contains 12 subtopics, 282 topic questions and 713 marks in total. Rows count only the parts tagged to that subtopic, keep the same colour in both charts and repeat paper count, tagged marks and year range in the native table.

Topic question count and mark distribution

Subtopics are on the vertical axis and sorted from highest to lowest. Only the parts whose knowledge graph matches a subtopic are counted for it, and percentages are each row's share of the tagged total in that chart. A part tagged to several subtopics is counted in each bar, so the bars are not a partition of the topic total.

Questions by subtopic

question items

28 understand how to use the relationships • (tensile or compressive) stress = force/cross-sectional area • (tensile or compressive) strain = change in length/original length Young modulus = stress/strain. 23 papers

6214.0%

25a be able to use the equation for viscous drag (Stokes' Law),

F = 6 π η r v

. 23 papers

6013.6%

24 understand how to use the relationship upthrust = weight of fluid displaced 23 papers

5913.3%

25b understand that this equation applies only to small spherical objects moving at low speeds with laminar flow (or in the absence of turbulent flow) and that viscosity is temperature dependent 22 papers

5211.8%

23 be able to use the equation density

ρ = \frac{m}{V}

22 papers

378.4%

27 be able to use the Hooke's law equation,

Δ F = k Δ x

, where k is the stiffness of the object 22 papers

357.9%

32 be able to calculate the elastic strain energy

E_{e l}

in a deformed material sample, using the equation

Δ E_{e l} = \frac{1}{2} F Δ x

, and from the area under the force-extension graph The estimation of area and hence energy change for both linear and non-linear force-extension graphs is expected. 23 papers

347.7%

29b understand the terms limit of proportionality, elastic limit, yield point, elastic deformation and plastic deformation and be able to apply them to these graphs 17 papers

265.9%

30 be able to draw and interpret tensile or compressive stress-strain graphs, and understand the term breaking stress 15 papers

255.7%

29a be able to draw and interpret force-extension and force-compression graphs 15 papers

235.2%

31 CORE PRACTICAL 3: Determine the Young modulus of a material 7 papers

153.4%

26 CORE PRACTICAL 2: Use a falling-ball method to determine the viscosity of a liquid 8 papers

143.2%

Marks by subtopic

marks

24 understand how to use the relationship upthrust = weight of fluid displaced 23 papers

19716.9%

28 understand how to use the relationships • (tensile or compressive) stress = force/cross-sectional area • (tensile or compressive) strain = change in length/original length Young modulus = stress/strain. 23 papers

16514.1%

25a be able to use the equation for viscous drag (Stokes' Law),

F = 6 π η r v

. 23 papers

15813.5%

23 be able to use the equation density

ρ = \frac{m}{V}

22 papers

12911.1%

25b understand that this equation applies only to small spherical objects moving at low speeds with laminar flow (or in the absence of turbulent flow) and that viscosity is temperature dependent 22 papers

1139.7%

27 be able to use the Hooke's law equation,

Δ F = k Δ x

, where k is the stiffness of the object 22 papers

857.3%

32 be able to calculate the elastic strain energy

E_{e l}

in a deformed material sample, using the equation

Δ E_{e l} = \frac{1}{2} F Δ x

, and from the area under the force-extension graph The estimation of area and hence energy change for both linear and non-linear force-extension graphs is expected. 23 papers

847.2%

30 be able to draw and interpret tensile or compressive stress-strain graphs, and understand the term breaking stress 15 papers

706.0%

31 CORE PRACTICAL 3: Determine the Young modulus of a material 7 papers

474.0%

29a be able to draw and interpret force-extension and force-compression graphs 15 papers

443.8%

29b understand the terms limit of proportionality, elastic limit, yield point, elastic deformation and plastic deformation and be able to apply them to these graphs 17 papers

423.6%

26 CORE PRACTICAL 2: Use a falling-ball method to determine the viscosity of a liquid 8 papers

332.8%

Subtopic comparison matrix

Curriculum order is by syllabus number, then alphabetically. Every row links to the matching past-paper question list.

Subtopic	Topic questions	Papers	Marks	Years
23 be able to use the equation density $ρ = \frac{m}{V}$	37	22	129	2019–2026	Open topic questions
24 understand how to use the relationship upthrust = weight of fluid displaced	59	23	197	2019–2026	Open topic questions
25a be able to use the equation for viscous drag (Stokes' Law), $F = 6 π η r v$ .	60	23	158	2019–2026	Open topic questions
25b understand that this equation applies only to small spherical objects moving at low speeds with laminar flow (or in the absence of turbulent flow) and that viscosity is temperature dependent	52	22	113	2019–2026	Open topic questions
26 CORE PRACTICAL 2: Use a falling-ball method to determine the viscosity of a liquid	14	8	33	2019–2025	Open topic questions
27 be able to use the Hooke's law equation, $Δ F = k Δ x$ , where k is the stiffness of the object	35	22	85	2019–2026	Open topic questions
28 understand how to use the relationships • (tensile or compressive) stress = force/cross-sectional area • (tensile or compressive) strain = change in length/original length Young modulus = stress/strain.	62	23	165	2019–2026	Open topic questions
29a be able to draw and interpret force-extension and force-compression graphs	23	15	44	2019–2026	Open topic questions
29b understand the terms limit of proportionality, elastic limit, yield point, elastic deformation and plastic deformation and be able to apply them to these graphs	26	17	42	2019–2026	Open topic questions
30 be able to draw and interpret tensile or compressive stress-strain graphs, and understand the term breaking stress	25	15	70	2019–2026	Open topic questions
31 CORE PRACTICAL 3: Determine the Young modulus of a material	15	7	47	2019–2026	Open topic questions
32 be able to calculate the elastic strain energy $E_{e l}$ in a deformed material sample, using the equation $Δ E_{e l} = \frac{1}{2} F Δ x$ , and from the area under the force-extension graph The estimation of area and hence energy change for both linear and non-linear force-extension graphs is expected.	34	23	84	2019–2026	Open topic questions

Browse every topic question

Topic question rules and edge cases

How many subtopics does Materials contain?: This page lists 12 subtopics tagged to the current syllabus. They are ordered by syllabus number, then alphabetically, and each row opens a page of matching past-paper questions.
How are the subtopic question and mark totals calculated?: A multiple-choice question contributes one item and its marks to every subtopic it is tagged with. A structured question contributes one item per tagged part, and that part’s marks; untagged parts of the same question are not counted here. A part tagged to several subtopics therefore appears under each of them.
Why do some subtopics have no numbered prefix?: Practical-skills statements and some syllabus bullets are unnumbered. Numbered statements come first; unnumbered statements and ties are sorted alphabetically.
Is the LaTeX rendered without JavaScript?: Yes. Subtopics that contain formulas are converted to static KaTeX HTML during the build, and the KaTeX stylesheet is served from the same site.

WPH11 Materials Topic Questions