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Interdependence in the environment

Within an ecosystem there are interdependent relationships between the species of that environment which are recognised and understood in Aboriginal and Torres Strait Islander ecological knowledge and practices. This classroom activity provides students with the opportunity to develop science understanding of the interdependencies ...

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SmartGraphs - African Lions: Modeling Populations - iTunes app

Investigate population modelling by studying the renowned African lions of the Ngorongoro Crater including real-life scientific data. Analyse graphs and data to answer questions and make predictions about changes in the lion population and other population models. Find out about important ecological and modelling concepts. ...

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Atoms of Fire: Building models of organic molecules

Have you seen the model of long-chain carbon molecules first developed by Friedrich August Kekulé? This model enabled chemists to make a great leap forward in their understanding of the structure of organic molecules. See how to represent the structure of methane, ethane, propane, butane and octane. Find out how to rearrange ...

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Catalyst: Accelerating glaciers in Antarctica

Discover a white world in which glaciers are racing toward the sea at seven times their normal speed. This is what is happening in Antarctica now and the consequences will eventually be felt at your nearest beach. Travel with scientist Dr Paul Williams to see some stunning images of what is occurring around the fringes ...

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Can photons and atoms generate laser?

Electrons around atoms can absorb and emit photons of particular colours of light – see three different atomic models explain what's going on.

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Catalyst: Tsunami prevention in the Pacific

By investigating sediments and debris left by devastating tsunamis throughout history, Japanese scientists are making discoveries that change the way we understand disaster prevention in the Pacific. Watch as research teams examine rocks and mud layers; create digital simulations of past tsunamis; and investigate the seabed ...

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Kamay – looking up

This resource explores the navigation techniques used during the journey of the Endeavour and contrasts these with Aboriginal and Torres Strait Islander navigational and astronomical systems that have been in place for many thousands of years. This learning sequence contains activities suitable for Year 7 - Year 10 science ...

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Catalyst: Climate and bushfires in Australia

What can science tell us about the major cause of bushfires in Australia's past? How can it help us predict future bushfires? Two scientists discuss evidence related to bushfire regimes (bushfire patterns, types and intensity). Please note that this clip contains recent images of homes destroyed by fire that may disturb ...

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Catalyst: How will fire change the climate?

Considering the impact of a changing climate on the severity and frequency of fires is one thing, but how about the impact of fires on climate? Why does Professor David Bowman describe this scenario as a 'fire spiral'? What are the consequences of a world with fewer forests? As Professor Craig Allen explains, drought and ...

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Atoms of Fire: Vitalism disproved through evidence

Discover how the scientific theory of vitalism, championed by the Swedish chemist Jöns Berzelius, was disproved by his former student Friedrich Wöhler. Find out the way chemists study how the different atoms in organic compounds combine in set ratios depending on the 'valence' of those atoms.

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Elliot and the Surfing Scientist: Carbon dioxide (CO2) fire extinguisher

Different types of chemical reactions are used in many everyday products. Watch this clip to see how two common household substances can be combined to create an 'Invisible Candle Extinguisher'.

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When neutron stars collide

Using technologically advanced supercomputers, scientists have developed theories about the creation of black holes deep in outer space. Watch the computer simulation in this clip to see how the collision of two neutron stars produces a gamma ray burst and a new black hole. Discover that our continuing understanding of ...

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Catalyst: Thinning ice sheet

Discover that that the massive ice sheet in East Antarctica has been losing mass since 2006 instead of growing, as was previously thought. Watch animations to see how scientists from NASA and Australia are using satellite technology and aerial monitoring to investigate the thickness of East Antarctica's ice sheet. Find ...

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Catalyst: Large Hadron Collider discovery, 2012

Have you heard of the Large Hadron Collider (LHC)? Watch this clip to find out about a scientific discovery at the LHC that left physicists uncharacteristically emotional. Catalyst's Dr Derek Muller takes you inside the LHC and talks to scientists there about the discovery of the Higgs boson and what it means for our understanding ...

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ABC News: 'Junk DNA' not junk after all

Geneticists have long thought that 98 per cent of human DNA was 'junk' (or 'non-coding') DNA. However, recent scientific research suggests that there is much more to this DNA than first thought. Watch this clip to discover more.

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Catalyst: The home of Australian science

Australia has a long and proud history of excellence in science. How should we celebrate this? Watch this clip to find out about an Australian organisation that recognises and promotes outstanding scientific achievement. You'll also find why its Canberra headquarters is referred to as 'the flying saucer'!

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Science Talk 2007: Vaughan Macefield

An interview and lab tour with Vaughan Macefield, a neuroscientist at the University of Western Sydney (UWS). Vaughan talks to students and their teacher from Quakers Hill High School about his work studying nerves and their function in the human body.

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Science Talk 2007: Jeremy Leggett

An interview with Dr Jeremy Leggett, global environmental expert from Solarcentury in the UK. Jeremy talks to a teacher from Leumeah High School about global warming, fossil fuels and the design of carbon neutral buildings.

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Solar wind gives asteroids a tanning

This brief ABC News in Science article from 2009 explains that asteroids become redder the longer they stay out in the sun because of the solar wind. Scientists are using this to try to find our more about our planetary origins.

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Exoplanets

This nine and a half minute video segment from Catalyst explains that relatively recently times we have got the technology to look for exoplanets. Astronomers have now uncovered more than 350 planets orbiting other stars. These worlds, known as exoplanets, can be pretty weird places. This program discusses a theory to describes ...