A measure of the nutritional content of food, including the vitamins, minerals and other essential nutrients needed for a healthy diet.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60...

The transformation of rocks beneath the Earth's surface through heat and pressure, and the presence of dissolved minerals in hot groundwater.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60...

A type of bone cell.
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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...

The traditional name for water-soluble salts and minerals that contain potassium.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

A naturally occurring element or compound that has a crystalline form and has been produced by geological processes.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning...

A type of rock containing minerals from which a useful substance can be extracted.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

A salt or other compound containing a carbonate ion CO₃^2-.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

Plants produce oxygen and provide our food, but what do they need to live? Learn why nitrates, phosphates, potassium and magnesium are vital for plant health. Biology - Plants - Learning Points. Understanding how plants grow ensures we...

Rocks are constantly on the move. Eroded by water, sinking into the sea, and ejected by volcanoes, rocks have their very own cycle of existence. Earth Science - Geology - Learning Points. The rock cycle is the process of rocks weathering...

Find out how remarkable adaptations allow the spinifex plant to thrive in the desert. Biology - Plants - Learning Points. Root hairs are specially adapted to suit their role. Root hairs increase the surface area of the roots for...

Malnutrition is the biggest risk to health worldwide. It has become a common problem in the developing world. What is it and how does it develop? Biology - Healthy Living - Malnutrition is a chronic lack of nutrients. Malnutrition is the...

Discover which foods are vital for a healthy diet. What should you be eating, how much, and why? Biology - Healthy Living - Learning Points. You need a balanced diet to be healthy. A balanced diet is varied and contains different amounts...

Everything we eat contains calories. We need them to function and carry out everyday tasks. How do we know which foods are right to eat and which contain 'empty calories'? Chemistry - Chemical Industries - Learning Points. Calories are...

From newborn babies to the elderly, changes to our diet at are vital as our age progresses. Find out how different nutrients help our bodies function at different stages in life. Biology - Healthy Living - Our nutritional needs change as...

The system of tubes inside plants that transport water and dissolved minerals from the roots up to the leaves. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...

Discover the hidden treasures of the Smithsonian Museum, where experts manage 144 million objects, aiding research on biodiversity, climate change, and more.

True or false ... Minerals are produced by plants?
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Material processes - Classifying materi
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ls - Minerals />

Learning Points
A mineral is a natural material that h
a

s not come from plants or...

Did you know that there are caves that are made entirely of salt? These were formed 6 million years ago.
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Material processes - Classifying materi
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ls - Minerals


A Twig Tidbit Film - Did you know? A...

Discover the key to a balanced diet.
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Life processes - Humans and other animals - Die
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and exercise />

Learning Points
A balanced diet contain
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all the nutrients the body needs.
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Discover the world of minerals and learn about their uses.
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Material processes - Classifying materi
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ls - Minerals />

Learning Points
Minerals are naturally occurring substan
c

es with a...

Learn about the surprising benefits a volcanic eruption can bring to an environment.
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Life processes - Living things in their environments - Role of t
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e environment />

Learning Points
Natural...

Obesity is a condition that can affect animals and humans.
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Life processes - Humans and other animals - Die
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and exercise />

Learning Points r

/> Obesity can damage your health.
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Six objects are shown on screen ... can you spot the minerals?
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Material processes - Classifying materi
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ls - Minerals />

Learning Points
A range


of minerals can be found on Earth.
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Learn how to find out the difference between tap water and spring water.
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Material processes - Separating mixtures - Separation
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y evaporation />

Learning Points
Evaporation c
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n be used to...