Science / Year 10 / Science Understanding / Chemical sciences

• TLF-IDM020679

Have you heard of greenhouse gases? What do you think they are? (The word 'greenhouse' is a big clue!) The delicate balance of greenhouse gases has been affected by the addition of an unprecedented amount of carbon dioxide (CO2) to our atmosphere in the last 150 years. Watch this video to find out how CO2 is being added ...

• TLF-IDM020826

This is a video [6:05 min] about the production of ethanol from sorghum at the Dalby Bio-Refinery in Queensland. The video describes and illustrates the stages in the production process including milling the sorghum into ‘flour’; mixing the flour with water to hydrolyse the starch; adding enzymes to liquefy the starch (the ...

• TLF-IDM021116

Good question! Find out whether this is possible by watching as biologist at MIT, Dr Sera Thornton explains. What is a genome? And why do genomes need to be decoded? If the rhino genome was successfully decoded and the part that described the rhino horn was isolated, what would the process be for creating a unicorn?

• TLF-IDM019617

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!

• TLF-IDM017167

This is a video about the valuable genetic diversity of Asia's indigenous domesticated animals; the contribution the animals' genes make to local people's food security; and the results of the use of genetic technologies. The video identifies ever-present links between farmers, their animals and the environment by describing ...

• TLF-IDM018849

Ecosystems are affected by many factors including increasing temperatures, which many scientists believe threaten natural systems on Earth today. This creative clip uses a theoretical world of black and white daisies to show how changes to the natural reflectivity of a planet's surface impacts temperatures and populations. ...

• TLF-IDM015379

Come on an eye-opening trip to Western Arnhem Land in northern Australia to find out how Aboriginal fire-control techniques are used to reduce greenhouse gas emissions by thousands of tonnes.On the trip you will also find out how exploding ping-pong balls are used to create low greenhouse gas firebreaks at the right time ...

• TLF-IDM015970

Are we approaching the 'age of megafires'? It might sound like something out of a sci-fi movie, but some scientists believe there is cause for concern. Watch this clip to find out how bushfires as we know them are changing. Discover why.

• TLF-IDM018850

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 ...

• TLF-IDM015723

Have you ever heard of a catalyst? Watch as the Surfing Scientist, Ruben Meerman, demonstrates the power of a catalyst. He adds one to just two other ingredients to create a chemical reaction with spectacular foaming results - just like elephant toothpaste!