GCSE Physics - Sound Waves and Hearing

⭐️ https://www.cognito.org/ ⭐️

** WHAT'S COVERED **
1. What are sound waves are.
2. How sound travels through materials.
3. Sound wave properties across different media.
Frequency remains constant when sound changes medium.
Wavelength changes proportionally with speed.
Sound can be refracted, reflected, and absorbed.
4. How human hearing works.
Anatomy of the ear.
The process of converting sound vibrations into electrical signals for the brain.
Interpretation of frequency and intensity.
5. Human hearing range.

** EXAM BOARD INFO **
AQA - Separate/triple science and higher tier only
IGCSE Edexcel - Not really in your course (apart from the fact that human hearing is 20-20,000 Hz)
Edexcel - Separate/triple science and higher tier only
OCR 21st Century - Separate/triple science and higher tier only
OCR Gateway - Separate/triple science and higher tier only

** CHAPTERS **
0:00 Introduction
0:15 What are Sound Waves?
0:51 How Sound Travels Through Solids
1:17 Sound Transmission and Speed in Different Media
1:49 Sound Wave Properties When Changing Media
2:38 Refraction, Reflection & Absorption
3:01 How Human Hearing Works
4:21 Human Hearing Range

** PLAYLISTS **
   • GCSE Maths (9-1)  

   • GCSE Biology (9-1)  

   • GCSE Chemistry (9-1)  

   • GCSE Physics (9-1)  

   • Alevel Biology  

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