iGCSE Physics - 3.4 Sound CORE

This Powerpoint specifically covers all criteria for –
Unit 3.4 Sound CORE

Describe the production of sound by vibrating sources

Describe the longitudinal nature of sound waves

State the approximate range of frequencies audible to humans as 20Hz to 20000Hz

Know that a medium is needed to transmit sound waves

Know that the speed of sound in air is approximately 330–350m/s

Describe a method involving a measurement of distance and time for determining the speed of sound in air

Describe how changes in amplitude and frequency affect the loudness and pitch of sound waves

Describe an echo as the reflection of sound waves

Define ultrasound as sound with a frequency higher than 20kHz

**Every Powerpoint includes learning objectives, a starter and plenary, suitable activities and review questions with mark scheme. We also provide a FREE pdf version which can be used as a handout for students and can be easily uploaded to any school’s VLE system.
**

Bring your Cambridge iGCSE Physics lessons to life with our expertly designed teaching resources! Each unit is tailored to the latest syllabus, offering ready-to-use lesson plans, engaging experiments, and visually clear notes that save hours of prep time. Whether you’re new to the course or refining your approach, The Science Shelf gives you everything you need to boost student understanding and exam success — all in one place.