This article is an overview of sound. It gives a brief summary of the following topics:
- characteristics of sound waves
- how the human ear works
- hearing loss in humans
- how animal ears work
The illustrations provide multiple discussion points and opportunities to practise the science capability interpret representations.
The section on hearing loss has links to audiocheck.net. Students can test the upper limits of hearing and the ‘mosquito tone’ audibility. Students might enjoy debating the ethics of using a ‘mosquito tone’ to discourage teenage loitering.
Check your school library for the article from the 2016 level 4 Connected journal ‘Getting the Message’ download it as a Google slide presentation or order it from the Ministry of Education.
The teacher support material (TSM) can be downloaded from TKI (Word and PDF files available). It includes the learning activities – Communicating our knowledge, Helping us hear and harnessing sound – along with related resource links.
Echolocation – discover more New Zealand bats – pekapeka and how they use sound.
- Sound – understanding standing waves
- Sound – visualising sound waves
- Sound – resonance
- Sound – wave interference
- Sound – beats, the Doppler effect and sonic booms
Sonar – here’s an example of sonar in action: Pink and White Terraces.
The Connected journals can be ordered from the Down the Back of the Chair website. Access to these resources is restricted to Ministry-approved education providers. To find out if you are eligible for a login or if you have forgotten your login details, contact their customer services team on 0800 660 662 or email email@example.com.
The Connected series is published annually by the Ministry of Education, New Zealand.