Science / Year 9 / Science understanding / Biological sciences

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Have you ever eaten hot chilli and wondered why your mouth feels like it's on fire? Watch this clip to find out all about the science of chillies, including what makes them hot, why they are hot and why they cause so much pain when we eat them.

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Space exploration demands technological advances that enable survival in extremely harsh environments. In this lesson, students will explore contemporary spacesuit design and create their own representation of the suit’s thermoregulation system.

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This set of learning activities challenges students to students consider the role that STEM plays in healthcare. They explore how biomedical engineers and doctors work together to improve and invent devices that enable people with disabilities to complete daily life tasks efficiently and effectively. Students consider ethics, ...

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When electrons in your retina absorb photons of light they don't emit light, they cause a molecule to change shape - and that lets you see colour!

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Asthma is one of the most common chronic health problems in Australia. Fortunately, a lot is known about the causes of asthma attacks, and how to treat them. View this clip to find out what happens to the airways of an asthma sufferer and how this disease can be managed.

• TLF-IDM018671

The ability to see colours is an important human trait, but did you know some people's colour vision is impaired. View this clip to discover what it means to be colourblind and how it happens. Find out also about the extraordinary colour vision of the dunnart, and why it is important for this nocturnal marsupial.

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This ABC article by Dr Karl describes in detail aspects of how water balance occurs with some interesting examples of when things go wrong. He then outlines the disease, cholera and how it is associated with bacteria carried by water and the disruption to our water balance. Dr Karl looks at the causes and effects of cholera ...

• TLF-IDM016458

This ABC article by Dr Karl continues his examination of the causes, effects and treatments for cholera. A good explanation of how the body responds to the disease cholera and when healthy, maintains a balance in its absorption of water through the digestive system. The historical background to developing treatment for ...

• TLF-IDM016450

This eleven and a half minute video segment from Catalyst is an excellent example of how science research can change our understanding. Some rare people who actually want their limb removed and will go to extraordinary lengths to do so are now regarded as experiencing a neurological phenomenon rather than a psychological disorder.

• TLF-IDM016194

This resource for basic physiology and anatomy has a comprehensive outline of all the systems of the body and sensory organs, with animated graphics and activities to help explain them, plus links to visual and interactive resources online.