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Listed under:  Science  >  Life  >  Ecosystems  >  Biogeochemical cycles  >  Carbon cycle
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ABC News: Hydrogen-diesel engine

How might we reduce damaging emissions from diesel engines and increase their fuel efficiency at the same time? Watch as Dr Vishi Karri from the University of Tasmania describes the development of a new type of engine: the hybrid hydrogen-diesel engine. Dr Hafez A Hafez explains how the technology can be easily adapted ...

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ABC News: Sound waves measure ocean temperatures

View how scientists use underwater sound waves to measure ocean temperature changes in the Indian Ocean. The animations show how the technology called acoustic thermometry works. Australian scientists are working with a global network of 'listening posts' to monitor the long-term effects of climate change on ocean temperatures.

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About evapotranspiration

This resource is a Bureau of Meteorology (BOM) web page about evapotranspiration. The resource explains what evapotranspiration is and provides information about how the Bureau's evapotranspiration values have been calculated. It explains how to access the Bureau's daily evapotranspiration maps and tables, provides information ...

Interactive

Acid Base Reactions

Students use this resource consisting of eleven slides with diagrams, written explanation and voice-over to understand that different bases react with acids and how word and chemical equations summarise the reactions. There is a two-question quiz and a summary slide.

Interactive

Acids and Alkalis

Students use this resource consisting of five slides with diagrams, written explanation and voice-over to understand how to use indicators to classify solutions as acidic or alkaline. There is a two-question quiz and a summary slide.

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All about engines

What does 'horsepower' really mean? And how do engines work? Join Luke and Abhi from MIT to find out! As Abhi explains, engines produce power by forcing a mixture of fuel and air into a tight space and then burning it. Piston engines and turbine engines do this in similar, yet different ways. After watching this video, ...

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Argo floats

This minute video segment from Catalyst decade ago describes the Australian initiative, Argo, that has become a major international collaborative project to look at the world's oceans and help understand processes at depth - monitoring the pulse of the global heat balance and giving us vital information on the ocean's role ...

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Atoms Alive: Cells and energy

Cells are like chemical factories. Discover the different ways cells get energy to carry out their daily operations. Learn about the different types of metabolic processes inside cells, such as those that break down molecules to release energy and those that assemble building blocks to make more complex components.

Online

Biofuels

This is a unit of work about ethanol and other biofuels. The unit revises students understanding of the carbon cycle and renewable and non-renewable fuel sources. The inquiry focuses on a series of experiments that examine the effect of temperature on the fermentation of yeast and to determine the flash point of ethanol ...

Online

Carbon clues

Carbon is all around us and available to us in many different forms, yet we can’t see it and often we don’t even know it’s there – using a detective story setting students sift through clues to build an understanding of carbon and the implications of its use. The unit includes PDF resources and video quiz challenges for ...

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Carbon country update

This five and a half minute video segment from Catalyst discusses the potential to manage controlled burning in Arnhem that reduces frequency of wildfires to provide other benefits. The potential to turn this into economic benefits from carbon trading is explored and the science investigations that will first be essential.

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Carbon dioxide and greenhouse gases

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 ...

Online

Carbon is child's play

Carbon is all around us and makes up every living thing. This unit investigates the basic science of carbon in living things and build awareness of the science of the carbon cycle and its importance to our daily lives and the planet. The unit includes PDF resources and video quiz challenges for teachers and student and ...

Online

Carbon is energy

We all use energy every day. Energy is available to us in many different forms - food, heat, electricity, petrol. But where does it all come from? This unit investigates the science of energy, renewable and non-renewable energy sources and how they can be sustained into the future. The unit includes PDF resources and video ...

Online

Caring for our carbon

Carbon is all around us and available to us in many different forms – as an atmospheric gas, as an energy source, and as a food source. This unit investigates the science of carbon and the issue of climate change as both a scientific concept and a political issue, and, through discussion and debate, support students' to ...

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Catalyst: Aboriginal fire knowledge reduces greenhouse gases

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 ...

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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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Catalyst: Chemical pollutants toxic to whales

Explore how chemical pollutants affect the Antarctic food web. A scientist shows that baleen whales are consuming Antarctic krill contaminated by accumulated residues of persistent organic pollutants (POPs) from pesticides and industrial chemicals. Find out why these pollutants are concentrated at the Earth's polar regions.

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Catalyst: Geoengineering - a solution to climate change?

What is geoengineering, and how is it being investigated by scientists as a means of combating climate change? Learn about some climate control techniques that could slow down or even reverse the effects of global warming. Hear an atmospheric physicist explain the pros and cons of geoengineering techniques.

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Catalyst: Impact of coming to school on carbon emissions

How big is your carbon footprint as you travel to and from school? Watch Daniel O'Doherty, 2008 'Action Against Climate Change' Eureka Schools Prize winner, as he determines his hypothesis then designs and conducts a study about carbon emissions. Listen to the recommendations he makes to reduce and offset the emissions ...