A shaking of the Earth's surface due to a release of energy within the crust that generates seismic waves.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and...

The earth below our feet is continually moving. How do changes underground lead to effects on the surface, and what happens to change these movements into devastating earthquakes? Earth Science - Geology - Learning Points. Movement of...

What does this graph show? Information is gradually built up throughout the film to show not only why some information is vital to an accurate graph, but why lack or skewing of information can lead to misrepresentation. Maths -...

The ingenious system to measure the distance to the Moon involving Apollo astronauts, lasers and a unique mirror system planted on the lunar surface. Physics - Our Solar System - Learning Points. In 1969, the Apollo 11 astronauts left an...

A measurement of the efficiency of a chemical reaction, calculated by dividing the actual amount of product by the theoretical maximum amount.
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A Twig Science
Glossary Film.
Key scientific terms defined in just...

The evolution of standard measurements from body parts to precise, universal measures. Maths - Measurement A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in...

How accurately should speed be denoted? Would you round a snail's speed to the nearest whole unit? Or give a rocket's speed to five decimal places? Why accuracy, rounding and significant figures are useful. Maths - Accuracy And Proof A...

How would you bake the world's biggest cake? The same way as a small one... in ratio, but with increased measures. Maths - Number A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show...

The story of how a Persian scholar calculated the Earth's circumference over 1000 years ago, using only a mountain and trigonometry. Maths - Shape A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s...

How Maharaja Jai Singh used scale to build and enhance the accuracy of his giant astronomical sundials. Maths - History Of Maths A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show...

How Florence Nightingale's design of the pie chart saved millions of lives by demonstrating statistics in a simple, visual way. Maths - Statistics And Probability A Twig Math Film. Reinforce and extend the learning required by the...

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...

The story of a 60m sprint which, without decimals, would have resulted in a dead-heat. Maths - Number A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action...

What is the combined weight of all of the information on the internet? Mathematicians must work with the smallest particles of the Web to find out. Maths - Number A Twig Math Film. Reinforce and extend the learning required by the...

Heptathlon scoring involves converting distance, time or height measurements into a universal points system. The result? A complex scoring system that relies on algebra. Maths - Algebra A Twig Math Film. Reinforce and extend the learning...

Even when you are standing still, you are moving through space at incredible speed. Find out how to calculate just how fast the Earth is moving. Maths - Accuracy And Proof A Twig Math Film. Reinforce and extend the learning required by...

How many stars are there in the Universe? Astronomers calculate it the same way they would grains of sand on a beach... using volume. Maths - Measurement A Twig Math Film. Reinforce and extend the learning required by the curriculum....

When measuring very large data sets, like the crowd of 1.8 million who attended Obama's inauguration, often exact counting is impossible. Find out how statisticians use density samples to estimate their statistics. Maths - Accuracy And...

The force of gravity acting on a mass, measured in newtons. On Earth, gravity exerts a force of just under 10 newtons per kilogram. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...

Height above sea level or other reference point on the Earth's surface. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...

Electromagnetic radiation present between ultraviolet and gamma rays on the electromagnetic spectrum, with wavelengths from about 0.01 to 10 nanometres. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using...

If you grew up in the United States, you probably learned the United States Customary System (USCS) for weights and measures. USCS terms like inches, feet, pounds, and miles are derived from the British Imperial System, steeped in a...

Learn how the metric system simplifies measuring mass, from small objects like paper clips to large items like cars. This video covers the use of grams, kilograms, and metric tons, explaining the difference between mass and weight and...

Get a practical understanding of how the metric system measures distance, from meters to kilometers and beyond. This video breaks down the metric units of length, using everyday objects like guitars and baseball bats to visualize a...