Curated Video
Cola Volcano
We add mints to diet cola in order to produce a fountain. When we add the mints to the diet cola, the porous surface of the mint causes the carbon dioxide trapped within the drink to be released rapidly, resulting in a cola volcano.
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Curated Video
Dry Ice and Magnesium
We use magnesium and blocks of dry ice to show how a redox reaction occurs. A cavity in a block of dry ice is filled with coils of magnesium ribbon, which are set alight. A second block is then placed on top, but instead of this putting...
Curated Video
Inflating Glove
We inflate a rubber glove using the gas produced during a neutralisation reaction. Bicarbonate of soda is added to vinegar in a beaker covered by a rubber glove and it expands. The gas is used to extinguish a flame, showing that it is...
Curated Video
Fire Extinguisher Sublimation
We release carbon dioxide from a fire extinguisher against a dark cloth to see what happens. The expanding gas cools as it leaves the extinguisher, forming a visible dry ice solid on the cloth. As it warms, the carbon dioxide vanishes...
Curated Video
Redox Reactions
For centuries, humans have been extracting metals from molten ores. Today, the basic technique remains the same, but how does extraction work?
Chemistry - Reactions - Learning Points.
Metals can be extracted from rocks if they are...
Curated Video
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...
Curated Video
Fermentation: The Chemical Process Behind Everyday Foods
Discover the chemical process which produces some of our most common foodstuffs, from bread to yoghurt, to wine and vinegar.
Chemistry - Chemical Industries - Learning Points.
Fermentation is the process of converting sugar and other...
Curated Video
Carbon Trading
International governments have put caps in place to limit carbon dioxide emissions from industry. What are emissions caps and will they solve the problem?
Human Geography - A Changing World - Learning Points.
The percentage of carbon...
Curated Video
Aorta
The biggest artery in the body.
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...
Curated Video
Chemical reactions – What happens next?
Vinegar is added to bicarbonate of soda ... what happens next?
Material processes - Changing materials - Chemical reactions
A Twig Tidbit Film - What happens next? A short section of film is played and the children have to...
Curated Video
The Amazon rainforest
Find out how deforestation in the Amazon rainforest affects the whole planet, and what is being done to stop it disappearing completely.
People and places - Human impact on the environment - Humans on Earth
Learning Points
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Curated Video
You are one big chemical reaction
Did you know you are one big walking talking chemical reaction?
Material processes - Changing materials - Chemical reactions
Learning Points
Chemical reactions happen inside the human body.
Respiration is a chemical...
Curated Video
What is air?
You may not think about it much, but air is everywhere and it is essential to life.
Material processes - Solids, liquids and gases - Characteristics of air
Learning Points
Air is a mixture of gases including nitrogen and...
Curated Video
Smog - Air Pollution
Find out how harmful gases in the air can react together to create smog ... a form of air pollution.
People and places - Human impact on the environment - Polluting the air
Learning Points
Smog is a mixture of harmful gases...
Curated Video
The Carbon Family - Reducing Emissions
Meet the Carbon family and discover why reducing our carbon emissions will help stop global warming.
People and places -Future of energy - The future of energy
Learning Points
Making small changes at home can reduce carbon...
Curated Video
Volcanic eruptions
Erupting volcanoes are a captivating example of materials changing state.
Material processes - Solids, liquids and gases - Changes of state
Learning Points
Molten rock underground is called magma.
Molten rock on the...
Curated Video
The Heart - Circulatory System
Explanation of the circulatory system.
Life processes - Body systems - The circulatory system
Learning Points
The heart is a strong muscle that pumps blood throughout the body.
Arteries and veins carry blood around the...
Curated Video
Energy sources
Discover the new technologies being developed to provide energy across the globe.
People and places -Future of energy - Energy sources
Learning Points
Most energy comes from burning fossil fuels.
Fossil fuels will...
Curated Video
Follow a human breath
Follow the journey of a human breath.
Life processes - Body systems - The respiratory system
Learning Points
As we inhale, air travels down the trachea to the lungs.
Oxygen in the lungs passes through bronchioles and air...
Curated Video
How does a fish breathe?
Find out how fish breathe underwater.
Life processes - Body systems - The respiratory system
Learning Points
Every animal needs oxygen to survive.
Fish have gills that absorb oxygen from water.
A Twig Context Film....
Curated Video
Why is urine yellow?
Urine is a waste product produced by humans and animals. Why is it yellow?
Life processes - Living processes - Excretion
Learning Points
Urine is produced by the kidneys and is excreted through the bladder.
Urine is...
Curated Video
What is excretion?
All living things need to excrete, but what do we mean by this?
Life processes - Living processes - Excretion
Learning Points
Excretion is the process of removing waste products.
Waste products need to be removed from...
Curated Video
Photosynthesis
Plants have the amazing ability to make their own food, but how do they do it?
Life processes - Green plants - Plant uses
Learning Points
Leaves contain chlorophyll that absorbs light energy from the Sun.
Green plants...
Curated Video
Climate change
This film explores how the world's climate has changed over time and how human activities have accelerated this natural process.
People and places -Environmental awareness and care - Environmental changes
Learning Points
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