Ultrasound(OCR GCSE)

Mastery Mind: Physics Revision · Oct 20, 2026

Ultrasound (Topic 4.9) explores how sound waves above 20,000 Hz are used in medical imaging and sonar through the principle of partial reflection at boundaries between media of different densities. Mastery of this topic requires candidates to perform precise echo-sounding calculations using d = v × t/2, apply correct scientific language in extended answers, and evaluate ultrasound against X-rays — skills that appear in both Foundation and Higher tier papers and carry marks across all three assessment objectives. Listen to this audio revision guide for Ultrasound. Test your knowledge with…