Curated Video
Sedimentary rock
Rock formed by the build-up of layers of sediment over time. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
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Hydrophobic
Meaning water-fearing, a hydrophobic substance is one that repels water. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
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Organic molecule
Generally refers to a compound that contains carbon bonded to hydrogen and is usually associated with the carbon molecules made by living organisms. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using...
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Fossil fuels
Fuel formed over millions of years, in conditions of high heat and pressure, from the fossilised remains of dead organic matter such as plants and animals. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds...
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Factpack: Global Electricity Supply
An insight into the different ways electricity can be generated. Which countries use renewable, or non-renewable, means? Physics - Electricity And Circuits - Learning Points. A Twig FactPack Film. Open a discussion on what has been...
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Heterogeneous mixture
A mixture of two or more substances which remain as physically separate substances. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
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Energy resources
Usable sources or stores of energy. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts and key...
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Factpack: Why Do Teens Get Spots?
Find out what's happening during puberty that causes spots. Biology - Being Human - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic, or use to grab attention at the start of a learning...
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The Oilmen and the Animals
They are seeking the world's most dirty fuel, but the oilmen of Barrow Island are also helping to conserve rare and endangered species. A story of ecologically-responsible oil extraction. Earth Science - Human Impacts - Learning Points....
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Why is Fat So Hard to Shift?
Discover why fat is important to our bodies, how and why it is stored - and why getting rid of excess body fat is so much more difficult than gaining it in the first place. Biology - Healthy Living - Fat is stored by the body when you...
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Oil Spills - Environmental Impact
Offshore oil spills can lead to decades of ecological harm for marine life. How can we clean-up oil spills and limit damage to the environment? Earth Science - Human Impacts - Learning Points. Offshore oil spills float on the surface of...
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Oil Shocks
The factors affecting global oil prices, and what can happen if prices shift dramatically. Earth Science - Earth's Resources - Learning Points. Oil price is determined by the current supply to world markets, the amount in reserves, and...
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Frontier Oil Exploration
Dwindling oil supplies mean exploration drilling is moving to far-flung reaches of the Earth. What difficulties does this pose, and what could the environmental impacts be? Earth Science - Earth's Resources - Learning Points. In the USA,...
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Ferrofluids
We compare the properties of three iron mixtures: iron and water, iron and oil and a ferrofluid - a mixture of compounds containing iron and oil. First, we look at how iron filings behave when mixed with water and then oil. We then hold...
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Clearing Oil Spills
We investigate the effectiveness of different methods to clear oil spills from water. First, we try to burn the oil in a sample of water using a gas lighter but there is no effect. Next, we break the oil up using detergent but this does...
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Liquid Density
We compare the density of oil, salt water and fresh water using displacement tanks. Equally weighted measuring cylinders are placed into the three liquids and the amount of water displaced is collected for comparison. Physics - Forces -...
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Fossil Fuels: Use
Fossil fuels are a finite energy source. How long will they last, and why is it so difficult and costly to extract these fuels from beneath the earth and oceans? Earth Science - Earth's Resources - Learning Points. Fossil fuels are...
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Non-Newtonian Liquids
Introducing the liquids whose behaviours seem to defy the accepted states of matter. What are they and why don't they behave as we predict? Chemistry - Atoms And Bonding - Learning Points. Newtonian liquids take the shape of their...
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Fossil Fuels: Formation
Where does our natural gas, coal and oil actually come from? Discover the processes that created our modern fossil-fuel reserves, which began millions of years ago. Earth Science - Earth's Resources - Learning Points. Fossil fuels are...
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Fuels
Learn all about fossil fuels and how the energy they contain came from the Sun. Physical processes - Energy and energy transfer - The Sun as our main source of energy Learning Points Oil and gas are formed from remains of marine plants...
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Advanced separation
Find out how advanced separation processes are used to separate substances in complex mixtures. Material processes - Separating mixtures - Other means of separation Learning Points Chromatography separates pigments in a liquid....
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The energy debate
Which is better ... renewable or non-renewable energy? People and places -Future of energy - The energy debate Learning Points Non-renewable energy will run out; renewable energy will not. Burning fossil fuels releases harmful emissions....
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Overusing resources
Find out why some resources are in short supply and why we need to conserve as much as possible. People and places -Human impact on the environment - Overusing resources Learning Points Some natural resources on Earth are limited and...
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Fractional Distillation - Oil Separation
Learn about fractional distillation and how it is used to separate crude oil. Material processes - Separating mixtures - Other means of separation Learning Points Distillation separates liquids using their different boiling points. The...