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IB Physics SL S2.1.2 Designing Investigations Questions

Design SL investigations by selecting variables, controls, measurements and apparatus that test a relationship fairly and reproducibly.

Syllabus
First assessment 2025
Course
Physics SL
Level
SL

Exam points

  • identify an independent variable or factor that affects the measured outcome and state a suitable range or set of values
  • choose relevant control variables such as mass, dimensions, material or initial amplitude so that only the intended factor changes
  • outline measurements and apparatus needed to collect data that can test the proposed relationship

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Study S2.1.2—Designing investigations conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Physics SL S2.1.2 Designing Investigations Questions question 1

[Maximum number: 1]

A student investigates whether the Stefan-Boltzmann law, L=4πσR2T4L=4 \pi \sigma R^{2} T^{4}, applies to stars.
L= luminosity of the star, in W
σ=\sigma= Stefan-Boltzmann constant
R= radius of the star, in m
T= surface temperature of the star, in K
To verify the law, they obtain values from databases and manipulate the data as shown.

Table for Question IB Physics SL S2.1.2 Designing Investigations Questions question 1 — IB Physics SL

Suggest a possible improvement of the investigation, related to the range of the surface temperatures of the stars selected.

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