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How Do Planes Fly?
Aeroplanes use the same forces and physical principles as birds to fly. Discover how man has copied nature to achieve flight. Physics - Forces - Learning Points. Flight occurs when the upward force (lift) is greater than the downward....
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Types of Weather: Wind
What is wind and what are localised winds? Find out about the global cycles which take winds right across the world. Earth Science - Weather - Learning Points. Wind begins with the difference in air pressure. Air moves from areas of high...
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What is an Orbit?
How the orbit of the planets is dictated by mass and the force of gravity. Physics - Our Solar System - Learning Points. The curved path of one object around another is its orbit. Objects orbit due to the effects of gravity. The...
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Non-Newtonian Liquids
Introducing the liquids whose behaviours seem to defy the accepted states of matter. What are they and why don't they behave as we predict? Chemistry - Atoms And Bonding - Learning Points. Newtonian liquids take the shape of their...
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Planes, Wedges, Screws
There are only six basic types of machine. Discover more about planes, wedges and screws: what are they and why are they useful? Physics - Forces - Learning Points. Machines based on the ideas of Archimedes make work easier. An inclined...
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Arches
Discover how forces are applied through an arch, and why this makes it the perfect shape for architecture. Maths - Space A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s math films show abstract...
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Strengthening the Bank of China
The Bank of China Towers in Hong Kong were once Asia's tallest buildings. To stabilise the structure, the strongest shape was used... the triangle. Maths - Shape A Twig Math Film. Reinforce and extend the learning required by the...
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Intermolecular force
A weak attractive force between molecules, much weaker than the chemical bonds that hold atoms together within molecules. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
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Strong nuclear force
The force that holds protons and neutrons together in the nucleus of an atom. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
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Weight
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...
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Propulsion
The process of pushing or moving an object forwards. 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...
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Strong material
A strong material is one that is resistant to wear and physical force. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
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Buoyancy: Upward Force from Surrounding Fluid
The upward force exerted on an object by the fluid which surrounds it. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
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Speed
Speed is how fast something moves. The world around us - Investigating forces - Speed and strength Learning Points How fast something moves is called its speed. There are a number of different factors that affect how fast or slow...
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What makes things move?
Did you know that forces make everything move? The world around us - Investigating forces - What makes things move? Learning Points Forces can make things move, speed up and/or change direction. There are two kinds of force: pushes and...
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What is a force? – Jigsaw
What is it? ... It's a crushed plastic bottle! Physical processes - Force and motion - What is force? A Twig Tidbit Film - Jigsaw. An image is slowly revealed as pieces of the jigsaw are removed. The children have to identify it.
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Gravity - Why Things Fall
Have you ever wondered why things fall? It's because of gravity. The world around us - Investigating forces - Gravity Learning Points Gravity is a force that pulls things to the ground. We feel the effects of gravity all the time,...
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Dung beetle
Did you know that the dung beetle is stronger than an elephant? The world around us - Investigating forces - Speed and strength Learning Points The stronger something is, the bigger the force it can use to push or pull things. A Twig...
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Exploring forces
There are two kinds of force – pushing and pulling forces. The world around us - Investigating forces - What makes things move? Learning Points Forces can make things move, speed up and/or change direction. There are two kinds of force:...
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Reducing Friction: Speed is the Rate of Motion
Did you know that speed is the rate of motion? Physical processes - Force and motion - Reducing friction Learning Points Force causes an object to move. The size of the force acting upon an object affects its speed. A Twig Tidbit Film -...
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Friction – Clip
How do birds land on water? Discover how they create and use resistance in order to slow and stop on water. Physical processes - Force and motion - Friction Learning Points Water resistance is a type of a friction. A Twig Tidbit Film -...
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Gears and pulleys – True or false
True or false ... Gears give a mechanical advantage? Physical processes -Force and motion - Gears and pulleys Learning Points Gears can be used to gain mechanical advantage. A Twig Tidbit Film - True or False? The children have to...
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Action and reaction – Clip
Find out how the lack of air resistance within the vacuum of space is an important factor in space exploration. Physical processes - Force and motion - Action and reaction Learning Points There is no air resistance in the vacuum of...
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Reducing Friction: How Water Makes You Slide Faster
Did you know that the constant flow of water reduces friction and makes you go faster down waterslides? Physical processes - Force and motion - Reducing friction Learning Points Lubricants are substances that reduce friction. A Twig...