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Listed under:  Science  >  Matter  >  Atoms  >  Radioactivity
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Meteorites

This is an information sheet about meteorites, covering their sources, composition, classification, systems of naming and Australian laws governing their ownership.

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Gamma rays and space balloons

Have you ever wondered how scientists know so much about the universe when it's too far away to see and no one has ever been there? It's not just by using telescopes based on Earth. Watch as an international team of astrophysicists and engineers attempt to launch a balloon high into the atmosphere, loaded with expensive ...

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Japanese tsunami's nuclear threat, 2011

Remember the earthquake and following tsunami that hit Japan in March 2011 and damaged a nuclear power plant? Find out about the damage caused, what exploded and why, and the aftermath of the disaster. What debates about nuclear power plants were reignited by the events in Japan?

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Green glow of radiation

Coming into contact with a large dose of radiation is known to be hazardous. But will it make you light up like a car dashboard at night? Some anecdotes that will engage the students to learn about radioactivity while dispelling a few myths.

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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 ...

Interactive resource

Radioactive decay

Watch radioactive decay happen at the sub-atomic level. Make predictions and analyse graphs resulting from the decay of an array of radioactive atoms in order to determine the half-life of the element. For example, find the half-life of the radioactive element used in carbon dating, carbon-14. This learning object is a ...

Interactive resource

Radioactive decay: half life

Watch radioactive decay happen at the sub-atomic level. Make predictions and analyse graphs resulting from the decay of an array of radioactive atoms in order to determine the half-life of the element. For example, find the half-life of the radioactive element used in carbon dating, carbon-14. This learning object is one ...

Interactive resource

Radioactive decay: radiocarbon dating

Use radiocarbon dating to find and compare the ages of ancient remains. Convert organic samples to gas and use a Geiger counter to measure radioactivity. Use calculations and radioactive decay graphs to estimate the age of the samples. For example, check whether a bone from 'Sthenurus', a giant kangaroo, could be younger ...

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Constructing the Snowy Mountains Scheme

This collection of 24 digital curriculum resources focuses on the work of building the Snowy Mountains Hydro-electric Scheme. It is organised into seven categories: preparing the sites; bringing up supplies; drilling the tunnels; constructing the dams; building the power stations; constructing pressure shafts; and creating ...

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Mouth of the Guthega Dam tunnel, 1954

This is a photograph of the mouth of the underground tunnel from Guthega Dam to Munyang power station in New South Wales, which was part of the Australian Snowy Mountains Scheme. The photograph was taken by the Australian News and Information Bureau in 1954.

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Mechanical miner in Snowy Mountains Scheme

This is a photograph taken in 1956. A handwritten note on the back of the photograph reads: 'This photograph shows a jumbo mechanical miner burrowing through a mountain on the Snowy Mountains Scheme. A cherry picker in the rear lifts empty skips out of the way while it passes out a full skip on the tramway, replacing the ...

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Snowy Mountains Scheme relief map

This is a photograph of a hand-drawn relief map for the proposed Snowy Mountains Scheme from around 1945, showing the dams, tunnels, power stations and canals that would make up the Scheme. A typewritten note attached to the back of the photograph reads 'This photograph is of a relief map of the Snowy Mountains area showing ...

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Construction of the Eucumbene diversion tunnel, c1954

This is a black-and-white photograph that shows the initial construction of the tunnel built to divert the Eucumbene River as part of the Snowy Mountains Scheme. The photograph shows men at work in the tunnel and at its entrance, a stationary truck and an excavator clearing rock spoil. On the right of the photograph, observing ...

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Snowy Mountains Scheme tunnel, 1955

This is a black-and-white photograph of workers concreting the Eucumbene diversion tunnel for the Snowy Mountains Scheme in 1955. The photograph has been taken inside the tunnel, and shows a truck discharging concrete onto one of two conveyor belts via a hopper. A worker stands at the end of each belt; one of the workers ...

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Drilling on the 'Snowy', 1956

This is a black-and-white photograph from 1956 showing drillers fitting a drill during construction of the tunnels for the Snowy Mountains Scheme. The photograph shows two drillers wearing hard hats, gloves and waterproof gear and working in a confined space at the front section of the drill. One worker is holding the long ...

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Eucumbene diversion tunnel, 1955

This is a black-and-white photograph showing the construction of the Eucumbene diversion tunnel in the Snowy Mountains Hydro-electric Scheme in 1955. Men are working on a wooden platform inside the tunnel. Wooden formwork holds concrete in place against the rock walls.

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Snowy Hydro - Where Men and Mountains Meet, 1963: Cherry picker rotating muck train trucks

This clip shows tunnel excavation during construction of the Snowy Mountains Hydro-electric Scheme. It shows how rock spoil blasted from the tunnel face is loaded onto rail trucks by a mechanised loader and how the trucks are shunted into place with the help of a cherry picker. Surveyors then mark out drill holes on the ...

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Snowy Hydro - Sound and Safe, 1963: Safe drilling

This clip shows the safe drilling practices of the Snowy Mountains Hydro-electric Scheme in 1963. Workers known as scalers, with the help of a mechanical mucker, loosen rock spoil from a tunnel roof and sides after blasting. The clip shows the drilling jumbo, a three-tiered platform used in tunnelling work on the Scheme. ...

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Vietcong underground bunker-and-tunnel system, 1969

This colour photograph shows a member of the 9th Battalion, Royal Australian Regiment (9RAR) squatting in a small jungle clearing, pointing the barrel of his rifle into the darkness of an enemy underground bunker in South Vietnam. The soil around the bunker is slightly raised and compressed, and to the left several logs ...

Interactive resource

Exploring atoms: atom and ion bingo

Explore subatomic particles and how they combine to form atoms and ions. Compare different ways of modelling atoms. Use nuclear symbols to represent different isotopes. Build atoms and ions by combining protons, neutrons and electrons. This learning object is one in a series of six objects. Three of the objects are also ...