The strength of a pulling force, for example in a rope or cable.
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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...

High-energy electrons emitted by nuclei during radioactive decay.
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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 study and engineering of materials and devices at extremely small scales, in the region of 1 to 100 nanometres.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning...

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...

The story of Hennig Brand and how he discovered the element phosphorus by boiling buckets of urine. Discover why his experiments paved the way for the discovery of the modern chemical elements. Chemistry - Periodic Table - Learning...

What exactly are alloys? What is it about their properties that make them so useful for a huge variety of purposes, from construction to jewellery? Chemistry - Periodic Table - Learning Points. Alloys are metals mixed with other...

Carbon occurs naturally in four different forms. Discover how they differ and why? Chemistry - Atoms And Bonding - Learning Points. Carbon is present in all living organisms. Carbon in its elemental form appears as four distinct...

What is the expense, and environmental cost, of bottling water when tap water is freely available? Earth Science - Earth's Resources - Learning Points. Bottled water is up to 10,000 times more expensive than tap water. Bottled water has...

How does land get polluted, and what with? Discover the quantities of waste deposited in landfills each year, and just how much could be recycled. Earth Science - Human Impacts - Learning Points. Landfills are holes in the ground where...

It was thought the Egyptians used only manual labour to build some of the Wonders of the World. Now it is though they could have used simple machines. Physics - Forces - Learning Points. It is believed that the Egyptians constructed the...

We use a metal box holding rods of different materials to test their ability to conduct heat. The box is filled with boiling water and a paperclip is attached to the end of each rod using petroleum jelly. As the heat moves through the...

We look at how different materials change when they are exposed to liquid nitrogen. Flowers become frozen and stiff and the petals snap. A banana hardens and is strong enough to be used as a hammer and a squash ball becomes very brittle...

We use two magnets and a set of scales to examine magnetic field and strength. One magnet is attached to the scales and a second is lowered towards it. When opposite poles are facing each other, the weight on the scales decreases as the...

We use a metal ball and hoop to demonstrate heat expansion. When cool, the ball fits through the hoop, but there is little extra space. The ball is then heated over a Bunsen burner. When hot, the ball doesn't fit through the hoop. We see...

How these simple semiconductor devices allow us to control the strength and flow of electrical current in a circuit, and are integral components in modern electrical equipment. Physics - Electricity And Circuits - Learning Points....

A fluorescent substance is one that absorbs light at one wavelength and re-emits the energy as light at another wavelength, usually longer, a phenomenon called fluorescence. A Twig Science Glossary Film. Key scientific terms defined in...

Opposition to the flow of a current within a circuit, measured in ohms. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...

What is it? ... It's a submarine!
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Material processes - Classifying materials - Choosing suit
a

ble materials


A Twig Tidbit Film - Jigsaw. An image is slowly revealed as pieces of the jigsaw are...

What is it? ... It's the mineral turquoise!
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Material processes - Classifying materi
a

ls - Minerals


A Twig Tidbit Film - Big Reveal. The image zooms out from an extreme close-up to full frame. The...

What is it? ... These are rubber boots!
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Material processes - Classifying materials - Propertie
s

of materials


A Twig Tidbit Film - Big Reveal. The image zooms out from an extreme close-up to full...

Everything is made of the same thing – tiny building blocks called atoms.
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The world around us - Exploring materials - What is every
t

hing made of? />

Learning Points



Everything is made...

Find out why builders have to think very carefully about which materials to use when building a house.
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The world around us - Exploring materials - B
u

ilding a home />

Learning Points
All...

True or false ... Minerals are produced by plants?
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Material processes - Classifying materi
a

ls - Minerals />

Learning Points
A mineral is a natural material that h
a

s not come from plants or...

True or false ... All limestone is formed underwater?
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Material processes - Classifying mat
e

rials - Rocks />

Learning Points
Limestone is formed


underwater over millions of years.
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