IGCSEPhysics: Co-ordinated Sciences (Double Award)CIERevision Notes3. WavesSoundUltrasound

Ultrasound (CIE IGCSE Physics: Co-ordinated Sciences (Double Award))

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Ultrasound

  • The approximate range of frequencies audible to humans is 20 Hz to 20 000 Hz in frequency
    • The human hearing range decreases with age

 Frequencies of ultrasound

Range of human hearing, IGCSE & GCSE Physics revision notes

Humans can hear sounds between 20 and 20 000 Hz

  • Ultrasound is defined as

sound with a frequency higher than 20 kHz

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    Ann H

    Author: Ann H

    Ann obtained her Maths and Physics degree from the University of Bath before completing her PGCE in Science and Maths teaching. She spent ten years teaching Maths and Physics to wonderful students from all around the world whilst living in China, Ethiopia and Nepal. Now based in beautiful Devon she is thrilled to be creating awesome Physics resources to make Physics more accessible and understandable for all students no matter their schooling or background.