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Listed under:  Science  >  Scientific inquiry
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Kimberley points, late 19th century

This image shows five small, sharp cutting blades known as 'Kimberley points' that were made of different coloured glass and ceramic materials by Indigenous Australian craftspeople in the Kimberley region of Western Australia. They are an average of 8 cm long and 2.5 cm wide. The points at top right and bottom left show ...

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Energy chains: energy use

Select energy sources and energy converters to build energy chains to power appliances and vehicles. Examine how each energy converter in a chain loses some energy and reduces the energy available for use. For example, show that using a solar panel and an electric motor to drive a car delivers only 16% of the original ...

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Wild ride: get a grip

Investigate the role of friction in performance of bicycle tyres. Test how the type of tread affects grip and speed. Choose tyres best suited to track and weather conditions in a time trial. This learning object is one in a series of four objects.