A large cauldron-like volcanic feature, formed when a chamber full of magma empties and the ground above it collapses.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning...

The complete range of wavelengths, considered as a continuum, of all kinds of electromagnetic radiation.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and...

The outer atmosphere of the sun. A thin, extremely hot plasma - over a million degrees celsius, compared to around 6000 degrees for the visible surface.
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A Twig Science
Glossary Film.
Key scientific terms defined...

The physical separation of a solid from a fluid carrier, either gas or liquid, by passing it through a medium that blocks particles above a certain size.
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A Twig Science
Glossary Film.
Key scientific terms...

A quantity that has both magnitude, or size, and direction.
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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...

Discover the amazing world of the heart, how hard it works to pump blood around your body, and how ours compare to other animal's hearts.
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Biology - Human Body - L
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rning Points.
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A self-sufficient celestial body that is in orbit around a star.
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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...

The number of particles in 1 mole of a substance, which is 6.022 times 10 to the power of 23.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise...

How the millions of nerves in the spinal cord help the brain and body communicate.
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Biology - Being Human - L
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rning Points.
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Open a discussion on what has been already learnt...

The shortest distance between an object's start point and end point.
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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...

When the Moon is aligned directly in between the Sun and the Earth, it obscures all or part of the sun to an observer on the ground.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds...

A quantity that has magnitude, or size, but not direction.
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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...

Electromagnetic radiation in the region of the spectrum between visible light and x-rays, about ten to 400 nanometres in wavelength.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds...

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...

What is a satellite, why are they important, and how have satellites changed our understanding of the Solar System? Physics - Universe - Learning Points. Any object orbiting a planet is called a satellite. Moons are examples of natural...

Hot air balloons rely on heat alone to keep them in the sky. How does this work? Physics - Energy And Radioactivity - Learning Points. Hot air rises in cool air because it is less dense. The hot air within a hot air balloon creates the...

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...

How big is our Universe? Travel from Earth through the Solar System, past our Galaxy, to the Universe beyond. Physics - Universe - Learning Points. The Universe is constantly expanding. The Universe is already billions of light years...

The process of manufacturing lumps of glass into sophisticated mirror systems in the world's largest telescopes.



Physics - Universe - Learni

ng Points.

Mirrors are made from glass, which is melted and
spread...

The Sun is dying, getting hotter as it goes. Eventually it will shrink into a black dwarf, but life will have vanished long before.



Physics - Our Solar System - Learni

ng Points.

The Sun is 5 billion years...

Marine mammals like dolphins, seals and whales can hold their breath far longer than humans. How do they do this?



Biology - Human Body - Learni

ng Points.

Underwater mammals, such as humpback whales, can...

Why scientists dispelled rumours of extreme waves at sea, based on flawed mathematics. Maths - Statistics And Probability A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract...

Learn about how the kidneys function, regulate the salt levels in our bodies, filter our blood, and ultimately keep us alive. Biology - Human Body - Learning Points. The kidneys are located just below the ribs - one on each side of the...

Dolphins use of sound as a navigational tool is essential to their survival. Discover how they produce these sounds and use them to learn about their environment. Physics - Waves - Learning Points. Dolphins, like most marine species, use...