Using standing waves to measure the temperature-dependence of sound speed

As part of my International Baccalaureate (IB) Diploma, I wrote an Extended Essay (EE) in physics.
This page includes the report which I submitted.

Written report

Find below the submitted report. This report was awarded 1st Place for Scientific Investigations in the 2020 Science Teachers Association of Queensland (STAQ) Awards. Furthermore, it received the 2020 Acoustics Bursary from the Australian Acoustical Society.