Curated Video
Universe
Everything that exists. All physical matter and energy and the contents of the space between galaxies. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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Frequency
The rate at which a repeating event occurs, usually measured in counts per unit time. 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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Adrenaline
Also called epinephrine, a hormone produced by the adrenal glands, which are found just above the kidneys. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Equilibrium
A reversible chemical reaction reaches equilibrium when the concentrations of the reactants and products are constant. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
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Power
The rate of doing work, or of converting 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...
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Expansion and Contraction
Discover how different materials react to heat, and why this can be both useful and dangerous. Physics - Energy And Radioactivity - Learning Points. Temperature affects the size and shape of an object due to the expansion and contraction...
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Moon Measuring
The ingenious system to measure the distance to the Moon involving Apollo astronauts, lasers and a unique mirror system planted on the lunar surface. Physics - Our Solar System - Learning Points. In 1969, the Apollo 11 astronauts left an...
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Invading Plant Species
Ecosystems are finely balanced environments. The introduction of 'invader' plant species can be disastrous for biodiversity. Biology - Ecosystems - Learning Points. Protecting diverse delicate habitats from invading species is difficult....
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State of the Greenland Ice Sheet
Laser technology aboard aircraft has allowed scientists to measure the Greenland Ice Sheet, one of the largest bodies of ice in the world. Is it growing or shrinking? Earth Science - Human Impacts - Learning Points. NASA scientists...
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Chernobyl Disaster
In 1986, the Chernobyl nuclear power plant exploded. What caused the explosion and why has Chernobyl become a lasting reminder of the dangers of nuclear power? Earth Science - Earth's Resources - Learning Points. The world's first...
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Water Uptake in Plants
We place two privet hedge shoots under different conditions to see how the amount of water they draw up will change. They are both placed in measuring cylinders with the same amount of water and a layer of oil is added to the top to...
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Enzyme Action: Trypsin
We demonstrate denaturing by adding the enzyme trypsin to photographic film. Strips of photographic film are added to trypsin solution at different temperatures to determine the optimum conditions for the enzyme. In the right conditions...
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Agar Cube Diffusion
We use coloured agar cubes to see how different shapes change the rate of diffusion. The cubes are made using sodium hydroxide and phenolphthalein indicator to give them a pink colour. When these are added to hydrochloric acid, the...
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Precipitate Formation
We add potassium iodide and lead(II) nitrate to the opposite sides of a Petri dish filled with water to see how quickly they diffuse. When added to the water, the chemicals spread through the dish and when they meet they react to form...
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Elephant's Toothpaste
We create a rapidly expanding column of foam by mixing chemicals. Hydrogen peroxide and detergent are added to potassium iodide and food colouring to set off a reaction that creates vibrant expanding foam. Chemistry - Reactions -...
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Smashing Eggs
We use eggs to show how different rates of deceleration affect the outcome of collisions. One egg is dropped onto a hard surface and breaks. The second egg is dropped onto a soft surface and bounces, as the material slows its...
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Butler's Tourism Model
Butler's Tourism Model can be applied to any tourist resort to show six key stages of development. Discover how Blackpool, in the UK, has progressed over the past few hundred years. And how it may be entering a new seventh phase. Human...
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Collision Theory
Discover that altering the number of successful collisions between particles is key to changing the rate of chemical reactions. How this can be manipulated? Chemistry - ReactionsLearning Points. New substances are made when particles...
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Speed, Velocity, Acceleration
Discover how speed, velocity and acceleration are interlinked but very different measurements of motion. Physics - Forces - Learning Points. The velocity and acceleration of any moving object can be calculated. Speed is the distance...
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Endangered Species
From the western gorilla to the blue whale, thousands of animal species are under various levels of threat. What can we do to protect them or is it already too late? Biology - Adaptation And Evolution - Learning Points. An astounding...
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Natural Climate Change
Ice cores taken from deep within the Earth's polar regions hold a hidden secret: the historical record of the Earth's climate. Earth Science - Human Impacts - Learning Points. Evidence of natural climate changes can be found in...
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Rates of Reaction: Basics
Knowing the rate of a chemical reaction can be very important, particularly for industry. Discover which factors indicate the rate of a chemical reaction, and how you can change it. Chemistry - Reactions - Learning Points. Some reactions...
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Catalyst
A substance that increases the rate of a chemical reaction without itself being permanently changed or used up. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Flipping Physics
Energy Stored in an Inductor
We delve into the derivation of the equation for energy stored in the magnetic field generated within an inductor as charges move through it. Explore the basics of LR circuits, where we analyze a circuit comprising an inductor, resistor,...