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Hot spot
A fixed place within the mantle or oceanic lithosphere where rocks melt to generate magma. 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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Chemical bond
Bonds between atoms that allow the formation of chemical compounds. 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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Chemical energy
Chemical energy is stored in all compounds, and can be released in chemical reactions. 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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Nebula
A cloud of gas and dust in space. 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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Base (chemistry)
A substance that reacts with an acid to form a salt and 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 reinforce...
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Weathering: The Breakdown of Rock by Physical and Chemical Processes
The breakdown of rock into smaller pieces by physical and chemical processes at the Earth's surface. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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Moon
A general name for a natural satellite of a planet, but also the specific name for Earth's only natural satellite. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Cell division
The process by which a single parent cell divides into two or more daughter cells. 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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Exothermic
A chemical reaction or process that releases heat. 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...
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Hurricane Katrina: Part 1
In 2005, New Orleans was struck by Hurricane Katrina. What defences did the city have to protect it? Earth Science - Weather - Learning Points. New Orleans, Louisiana USA, straddles the Mississippi river and lies below sea level. New...
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Kilauea - The Island Maker
Volcanoes are infamously destructive, but they can also be a constructive force. Mt. Kilauea, the world's most active volcano, helped create the islands of Hawaii millions of years ago. Earth Science - Geology - Learning Points. Mount...
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Life Without the Moon
The Moon holds Earth in place and dictates our seasons. What happens to planets without a moon like ours? Physics - Our Solar System - Learning Points. The Moon formed after Earth collided with its twin, Theia. In proportion to the size...
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Earthly Treasures: Diamonds
Formed deep within the Earth's mantle, diamonds are difficult to find. But it's not just their rarity that makes them so valuable - diamonds have some surprising industrial applications too. Earth Science - Geology - Learning Points....
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Shoemaker-Levy
The collision of comet Shoemaker-Levy 9 with Jupiter in 1993 was the first collision of its kind to be witnessed by man. Physics - Universe - Learning Points. The comet Shoemaker-Levy 9 was discovered orbiting Jupiter in 1993....
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The Birth of Our Solar System
The explosive reactions and forces, from gravity to nuclear fsion, which formed our Solar System. Physics - Our Solar System - Learning Points. Our Solar System is the region of space which falls within the gravitational influence of our...
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What Are Comets?
How comets change as they journey around the Sun, what are they made of and where are they found? Physics - Universe - Learning Points. Comets formed from dust and ice particles when the Solar System was very young. There are at least a...
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Oxidation Reactions
Why do we cook our food wrapped in aluminium foil? Why does metal rust? It all comes down to oxidation reactions. Discover what happens to cause these reactions, and how to stop them. Chemistry - ReactionsLearning Points. The combustion...
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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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Yosemite's Valleys
The landscape of this national park was shaped by ice - carving the valleys, waterfalls and sheer cliffs that attract tourists from all over the world. Earth Science - Geology - Learning Points. Glacial ice has reshaped the landscape of...
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Origin of Species
How are new species created? An insight into the key evolutionary processes, played out over many generations, which lead to speciation. Biology - Adaptation And Evolution - Learning Points. We all originate from a single cell, so why...
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Stem Cells: Unlocking The Potential to Regenerate Tissues
Revealing the amazing and unique properties of stem cells, and how they can be used to regenerate tissues. Biology - Cells And DNA - Learning Points. There are three different types of stem cell: embryonic, foetal and adult. Stem cells...
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What Are Stars?
What are stars made of? How are they born, how do they live, and how do they die? Physics - Our Solar System - Learning Points. Our nearest star is the Sun. A star is formed from a cloud of dust and gas, which shrinks under gravity and...
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What Are Asteroids?
How are asteroids in our Solar System formed, where are they found, and what danger do they pose to life on Earth? Physics - Our Solar System - Learning Points. Asteroids are made from rock, metal or carbon, while comets are made of rock...
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How to Make Fake Snow
Snow forms in the atmosphere as a result of water molecules attaching themselves to nuclei bacteria. But scientists have found ways to manipulate the freezing process of water and the production of these nuclei to create snow...