Curated Video
Precision
How repeatable a measurement is. 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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Climate - Long-Term Weather
The long-term average weather conditions in a region, typically over a period of thirty years or more. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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The Very First Cell
The Earth is billions of years old and was once a very hostile place. Eventually, a single cell was formed that evolved and reproduced. What conditions produced this first life on Earth? Biology - Cells And DNA - Learning Points....
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Earthly Treasures: Precious Gemstones
Discover the specific conditions needed for the formation of emeralds, rubies and sapphires; and how there is now potential to 'grow' them in laboratories. Earth Science - Geology - Learning Points. Emeralds are made from beryllium....
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Homo Habilis and Boisei
2 million years ago, two species of apeman had evolved different strategies to survive the African environment. When the landscape changed, which would continue on the path to becoming human, and why? Biology - Adaptation And Evolution -...
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How Hot Is the Earth's Core?
Unreachable by man, scientists have developed a complex experiment to demonstrate the heat and pressure at the centre of the Earth. Earth Science - Geology - Learning Points. The Earth's core is a dense ball of iron and nickel. To...
Curated Video
Killer Heat Wave
Heat waves form when an area of high pressure becomes stationary over a region. The heat wave that struck Chicago brought hot sunny tropical weather, but its effects were devastating. Earth Science - Weather - Learning Points. A heat...
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Large Hadron Collider
The Large Hadron Collider, the world's longest particle accelerator, is exciting scientists around the world who hope it can recreate the moments just after the Big Bang. Physics - Universe - Learning Points. The Large Hadron Collider is...
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Early Man and Agriculture
Why was the development of early agricultural techniques a crucial evolutionary step? Discover how early farming techniques transformed Neanderthal Man. Biology - Adaptation And Evolution - Learning Points. The last ice age ended 12,000...
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Tropisms and Hormones
Discover the hormones that dictate whether a plant grows downwards with gravity, towards water and nutrients, or upwards towards light. Biology - Plants - Learning Points. Tropisms allow plants to seek out the best conditions for...
Curated Video
Speed of Sound
Sound waves move through different mediums at different speeds, but why is this? What factors affect the speed of sound? Physics - Waves - Learning Points. Speed of sound depends on many different factors. Temperature, elasticity and...
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We Are All Made of Stars
Discover how elements are formed in the centre of stars, and how some elements are formed in even more spectacular conditions. Chemistry - Periodic Table - Learning Points. Most elements were created in space. At the beginning of the...
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Photosynthesis and Starch
We put three different plants under different conditions to demonstrate that both light and carbon dioxide are needed for photosynthesis to occur. A leaf from each plant is taken and heated in ethanol to remove the pigment. These are...
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Microbes in Milk
We examine the number of microorganisms in different types of milk using resazurin indicator. Samples of pasteurised milk, UHT milk and powdered milk are left in the open for three days before resazurin indicator is added and the samples...
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Stimulating Daphnia
We examine the effects of different temperatures and chemicals on the heart rate of Daphnia. A microscope is used to let us see the Daphnia\u2019s heart and establish the heart rate under normal conditions. The heart...
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Stomach Acid and Antacid
We use the enzyme pepsin and hydrochloric acid to simulate the conditions within the stomach in two boiling tubes. Cooked egg whites are ground and added to two boiling tubes of hydrochloric acid, but one is mixed with a crushed antacid...
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The Issues With Aid
Although aid is usually helpful to a country in need, the type of aid can affect a country's recovery. What are the arguments for and against different forms of aid? Human Geography - A Changing World - Learning Points. International aid...
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Monsoon Zone
Around the world monsoons bring huge volumes of seasonal rain to certain regions. The best known is the Asian monsoon, but why does it happen? Earth Science - Weather - Learning Points. Monsoons are heavy rainfalls concentrated over the...
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Product
A substance produced as the result of a chemical reaction. 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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Erosion
The wearing away of rock and the removal of weathered rock, soil, and other solid materials away from source. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Plant adaptations
What do plants and animals have in common? Life processes - Green plants - Plants and their environments Learning Points Plants need water, air and light to grow. Plants can adapt to their surroundings to survive. A Twig Curriculum Film....
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The Arctic tundra environment
Find out how Arctic foxes survive in the cold tundra environment. Life processes - Living things in their environments - Role of the environment Learning Points The environment is the conditions of the area in which an organism lives....
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Germination - Seed Growth
Learn all about plant germination and the conditions that can affect its success. Life processes - Green plants - Plant growth Learning Points Germination is when a seed starts to grow into a new plant. Water, oxygen and the right...
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Context-Dependent Memory
If you’ve ever returned somewhere and found your mind suddenly filled with memories, you’ve experienced what psychologists call context-dependent memory. Research has shown that our recall of information is much stronger when it’s done...