# 9702 P1 SI units Topic Questions > CIE IAL 9702 P1: every SI units topic question from 10 papers (2025–2026), grouped by syllabus point. 15 questions, 15 marks, with direct links into the… - Canonical HTML: https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/ - Markdown mirror: https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/index.md --- CIE IAL · Physics · 9702 P1 · A Level Every 9702 P1 SI units topic question from the 2025–2027 syllabus, drawn from 10 papers (2025–2026) and grouped by syllabus point. Each row opens a page listing the exact question numbers, marks and a direct link into the paper. These are questions by topic, not full papers, so you can revise one topic at a time. - 9702 P1 - 4 subtopics - 15 topic questions - 10 papers - 15 tagged marks - [Back to SI units](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/) - [All paper codes](https://www.examsci.com/topics/) Core finding **2 express derived units as products or quotients of the SI base units… is the most frequently assessed subtopic in SI units, with 10 topic questions and 10 marks across 8 papers.** 4 recall and use the following prefixes and their symbols… follows with 4 topic questions and 4 marks. The topic contains 4 subtopics, 15 topic questions and 15 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 - [2 express derived units as products or quotients of the SI base units and use the derived units for quantities listed in this syllabus as appropriate](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/2-express-derived-units-as-products-or-quotients-of-the-si-base-units-and-use-the/) (8 papers) — 10 · 55.6% - [4 recall and use the following prefixes and their symbols to indicate decimal submultiples or multiples of both base and derived units: pico (p), nano (n), micro (μ), milli (m), centi (c), deci (d), kilo (k), mega (M), giga (G), tera (T)](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/4-recall-and-use-the-following-prefixes-and-their-symbols-to-indicate-decimal/) (4 papers) — 4 · 22.2% - [3 use SI base units to check the homogeneity of physical equations](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/3-use-si-base-units-to-check-the-homogeneity-of-physical-equations/) (3 papers) — 3 · 16.7% - [1 recall the following SI base quantities and their units: mass (kg), length (m), time (s), current (A), temperature (K)](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/1-recall-the-following-si-base-quantities-and-their-units-mass-kg-length-m-time-s/) (1 papers) — 1 · 5.6% ### Marks by subtopic marks - [2 express derived units as products or quotients of the SI base units and use the derived units for quantities listed in this syllabus as appropriate](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/2-express-derived-units-as-products-or-quotients-of-the-si-base-units-and-use-the/) (8 papers) — 10 · 55.6% - [4 recall and use the following prefixes and their symbols to indicate decimal submultiples or multiples of both base and derived units: pico (p), nano (n), micro (μ), milli (m), centi (c), deci (d), kilo (k), mega (M), giga (G), tera (T)](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/4-recall-and-use-the-following-prefixes-and-their-symbols-to-indicate-decimal/) (4 papers) — 4 · 22.2% - [3 use SI base units to check the homogeneity of physical equations](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/3-use-si-base-units-to-check-the-homogeneity-of-physical-equations/) (3 papers) — 3 · 16.7% - [1 recall the following SI base quantities and their units: mass (kg), length (m), time (s), current (A), temperature (K)](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/1-recall-the-following-si-base-quantities-and-their-units-mass-kg-length-m-time-s/) (1 papers) — 1 · 5.6% ## 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 | | | --- | --- | --- | --- | --- | --- | | **[1 recall the following SI base quantities and their units: mass (kg), length (m), time (s), current (A), temperature (K)](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/1-recall-the-following-si-base-quantities-and-their-units-mass-kg-length-m-time-s/)** | 1 | 1 | 1 | 2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/1-recall-the-following-si-base-quantities-and-their-units-mass-kg-length-m-time-s/) | | **[2 express derived units as products or quotients of the SI base units and use the derived units for quantities listed in this syllabus as appropriate](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/2-express-derived-units-as-products-or-quotients-of-the-si-base-units-and-use-the/)** | 10 | 8 | 10 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/2-express-derived-units-as-products-or-quotients-of-the-si-base-units-and-use-the/) | | **[3 use SI base units to check the homogeneity of physical equations](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/3-use-si-base-units-to-check-the-homogeneity-of-physical-equations/)** | 3 | 3 | 3 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/3-use-si-base-units-to-check-the-homogeneity-of-physical-equations/) | | **[4 recall and use the following prefixes and their symbols to indicate decimal submultiples or multiples of both base and derived units: pico (p), nano (n), micro (μ), milli (m), centi (c), deci (d), kilo (k), mega (M), giga (G), tera (T)](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/4-recall-and-use-the-following-prefixes-and-their-symbols-to-indicate-decimal/)** | 4 | 4 | 4 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/4-recall-and-use-the-following-prefixes-and-their-symbols-to-indicate-decimal/) | ## Browse every topic question - [1 recall the following SI base quantities and their units: mass (kg), length (m), time (s), current (A), temperature (K)](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/1-recall-the-following-si-base-quantities-and-their-units-mass-kg-length-m-time-s/) — 1 question items · 1 papers — 1 marks · 2026 - [2 express derived units as products or quotients of the SI base units and use the derived units for quantities listed in this syllabus as appropriate](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/2-express-derived-units-as-products-or-quotients-of-the-si-base-units-and-use-the/) — 10 question items · 8 papers — 10 marks · 2025–2026 - [3 use SI base units to check the homogeneity of physical equations](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/3-use-si-base-units-to-check-the-homogeneity-of-physical-equations/) — 3 question items · 3 papers — 3 marks · 2025–2026 - [4 recall and use the following prefixes and their symbols to indicate decimal submultiples or multiples of both base and derived units: pico (p), nano (n), micro (μ), milli (m), centi (c), deci (d), kilo (k), mega (M), giga (G), tera (T)](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/4-recall-and-use-the-following-prefixes-and-their-symbols-to-indicate-decimal/) — 4 question items · 4 papers — 4 marks · 2025–2026 ## Other topics in 9702 P1 - [Atoms, nuclei and radiation 27 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/atoms-nuclei-and-radiation/) - [Density and pressure 26 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/density-and-pressure/) - [Diffraction 9 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/diffraction/) - [Doppler effect for sound waves 11 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/doppler-effect-for-sound-waves/) - [Elastic and plastic behaviour 22 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/elastic-and-plastic-behaviour/) - [Electric current 13 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/electric-current/) - [Electromagnetic spectrum 9 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/electromagnetic-spectrum/) - [Energy conservation 25 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/energy-conservation/) - [Equations of motion 43 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/equations-of-motion/) - [Equilibrium of forces 17 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/equilibrium-of-forces/) ## Topic question rules and edge cases **How many subtopics does SI units contain?** This page lists 4 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. --- Full page with native tables, bar charts and Practice Hub links: https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/si-units/