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Radioactivity
The emission of particles as a result of the spontaneous decay of atomic nuclei. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
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Avogadro's constant
The number of particles in 1 mole of a substance, which is 6.022 times 10 to the power of 23. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
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Aerosol
A suspension of very fine liquid or solid particles in a gas. 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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Subatomic particles
Particles that make up the structure of atoms, such as neutrons, protons and electrons. 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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Fluid
A substance that is able to flow freely. 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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Saturn's rings
A series of rings surrounding the planet Saturn. 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...
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Cosmic dust
Or interstellar dust, is dust in outer space, often so fine that its particles are more like smoke. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
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Solar flare
A violent explosion on the surface of the Sun which affects all the layers of its atmosphere, heating plasma to tens of millions of degrees and releasing huge amounts of energy. A Twig Science Glossary Film. Key scientific terms defined...
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Heat
The transfer of thermal 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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Coastal Processes
A closer look at the three key processes that shape our coasts. What are they and what effects do they have? Earth Science - Geology - Learning Points. Our coastlines are constantly being re-shaped by three key processes. Erosion -...
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Gas Laws
The air we breathe is made up of a mixture of gases. Discover the invisible forces of gas at work around us. Physics - Forces - Learning Points. The air we breathe is made up of gases including nitrogen, oxygen and carbon dioxide. The...
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Big Bang Theory
Discover one theory about a single event over 13.8 billion years ago, that might have created our Universe. Physics - Universe - Learning Points. The Big Bang took place over 13.8 billion years ago. The Big Bang caused our Universe to...
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Saturn
Where does Saturn fit into the Solar System and what makes this planet unique? Physics - Our Solar System - Learning Points. Saturn is the 6th planet from the Sun. Saturn has such a low density that it would float on water. There are...
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Reducing Radiation Risk
Radioactive substances can seriously damage health. Those that work with them must take care to reduce their effects. What methods can we use and how do they work? Physics - Energy And Radioactivity - Learning Points. Exposure to...
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Thunder and Lightning
Thunderstorms can be an impressive sight, but how are they formed? What is happening deep inside certain clouds to create such huge bolts of energy? Earth Science - Weather - Learning Points. Thunderstorms form in dense tall clouds...
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Danger: Volcanic Ash
When a volcano in Iceland erupted in 2010, hundreds of planes were grounded by volcanic ash. Why? Past experience had shown just how dangerous flying in an ash cloud can be. Earth Science - Geology - Learning Points. In March 2010, the...
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Global Dimming
Even though the planet is warming, the amount of sunlight reaching the Earth's surface is decreasing. What is causing this, and what effect does it have? Earth Science - Human Impacts - Learning Points. Global dimming is the reduction in...
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Changing States of Matter
Water can either be a solid, a liquid or a gas. How does matter change state? Chemistry - Atoms And Bonding - Learning Points. Ice, liquid water and steam all consist of exactly the same molecules. Evaporation occurs when the temperature...
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Radioactive Substances
What is radioactivity? Explore the difference between alpha, beta and gamma radiation and how their different properties can make them useful. Physics - Energy And Radioactivity - Learning Points. Radioactivity is the nuclear decay of...
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Intermolecular Forces
Discover the role played by intermolecular forces in changing the state of matter between solid, liquid and gas. Chemistry - Atoms And Bonding - Learning Points. Intermolecular forces are the attractive forces between molecules....
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Solutions
Why and how do substances dissolve? Discover what happens when you create a solution. Chemistry - Atoms And Bonding - Learning Points. A solution is the mixture formed when a solid dissolves in a liquid. A solvent is a liquid that can...
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Static Electricity: The Hidden Dangers for Helicopters and Crew
A build up of static electricity is usually harmless, resulting in only small shocks. But in some cases it can be deadly. Discover the danger static electricity poses for helicopters and their crew. Physics - Electricity And Circuits -...
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Solids, Liquids and Gases
What is the difference between solids, liquids and gases? How does each state behave? Chemistry - Atoms And Bonding - Learning Points. The kinetic theory of matter states that particles are in constant motion and there are forces of...
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Smoking: The Damage
Find out more about the range of toxins in cigarettes and the serious damage they can cause to smoker's lungs. Biology - Human Body - Learning Points. Cigarette smoke damages the lungs. The chemicals in cigarettes irritate the lung...