Curated Video
Plant Transport
How does a tall tree draw water from its roots to its leaves? And how does food made in leaves reach the rest of a plant? Discover how plants transport resources via the xylem and phloem. Biology - Plants - Learning Points. Transpiration...
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Pollution: Air
What are the major atmospheric pollutants and where do they come from? Discover what air pollution means for the environment and how it affects humans, from smog to acid rain. Earth Science - Human Impacts - Learning Points....
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Thunder and Lightning
Thunderstorms can be an impressive sight, but how are they formed? What is happening deep inside certain clouds to create such huge bolts of energy? Earth Science - Weather - Learning Points. Thunderstorms form in dense tall clouds...
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Ordnance Survey Maps
Ordnance Survey has been creating maps for hundreds of years. How have their mapping methods changed since the first Ordnance Survey maps were made? Human Geography - Orientation And Settlements - Learning Points. The British Ordnance...
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Pollution: Land
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...
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Terminal Velocity
If a skydiver jumps out of a plane, when will they stop accelerating? Competing physical forces hold the answer. Physics - Forces - Learning Points. Terminal velocity is the maximum constant velocity. Terminal velocity increases with...
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Secret of the Sahara
It may be dry and sandy now, but the Sahara desert used to look very different. Evidence buried deep beneath the dunes reveals that the landscape has been changing naturally over thousands of years. Earth Science - Weather - Learning...
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Percentages: Feeding the Nutcracker
See the preparations the tiny Clark's Nutcracker makes for winter. Alongside its incredible memory, this bird must play the percentage game to survive. Maths - Number A Twig Math Film. Reinforce and extend the learning required by the...
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Newton's Laws of Motion
Isaac Newton's Laws of Motion explain how and why objects move as they do - the principles which underlie all of modern mechanics. Physics - Forces - Learning Points. Sir Isaac Newton published his laws of motion in 1687. Every movement...
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What Are Asteroids?
How are asteroids in our Solar System formed, where are they found, and what danger do they pose to life on Earth? Physics - Our Solar System - Learning Points. Asteroids are made from rock, metal or carbon, while comets are made of rock...
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Doppler Shift: Sound Discovery
How a unique but simple experiment in the 19th century gave a new insight into the behaviour of sound waves. Physics - Waves - Learning Points. The Doppler Effect is when the pitch of a sound seems to change as it moves past. The...
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Geothermal Power
The heat at the centre of our planet could fulfil all of our energy needs. Find out how some are already utilising geothermal power. Earth Science - Earth's Resources - Learning Points. Geothermal power is obtained from heat within the...
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Nuclear Waste
Nuclear fission is the process used in nuclear power plants, which creates radioactive nuclear waste that is hazardous to humans. Discover how this nuclear waste is disposed of and stored. Earth Science - Earth's Resources - Learning...
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Rainforest shadows
Trees in the rainforest create shadows and animals use the shadows to hide! The world around us - Light and sound - Shadows Learning Points A shadow is an area where light cannot reach. This means that shadows form wherever light is...
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Ice skating
Smooth surfaces, like ice rinks, have less friction than rough surfaces. The world around us - Investigating forces - What makes things stop? Learning Points Smooth surfaces, like ice rinks, have less friction than rough surfaces. A Twig...
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Landfills
Most of the world's waste ends up in landfills – what effect is this having on our environment? People and places - Human impact on the environment - Polluting the land Learning Points A landfill is a hole in the ground that waste is...
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Skydiving
Find out how air resistance allows skydivers to land safely even from the greatest heights. Physical processes -Force and motion - Friction Learning Points Air resistance is a type of friction. Terminal velocity occurs when the forces of...
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The dangers of electricity
Find out what happens to a farmer who becomes part of an electrical circuit. Physical processes - Electricity and magnetism - Conductors and dangers of electricity Learning Points People can conduct electricity. Conductors are materials...
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The Arctic tundra environment
Find out how Arctic foxes survive in the cold tundra environment. Life processes - Living things in their environments - Role of the environment Learning Points The environment is the conditions of the area in which an organism lives....
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Liquefaction
A fascinating example of a solid behaving as a liquid. Material processes - Solids, liquids and gases - Solids Learning Points Liquefaction causes solid soil to take on some characteristics of liquids. A Twig Context Film. Reinforce and...
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Life underground
Discover why the soil makes a surprisingly good habitat. Life processes - Living things in their environments - Habitats Learning Points Soil is a habitat and contains a range of both living and non-living things. Soil is a mixture of...
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Why do hot air balloons float?
Find out how hot air balloons work. Material processes - Solids, liquids and gases - Gases Learning Points Air is made up of different gases. The molecules in gas are widely spaced. When heated the molecules of a gas move around and...
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Snowflakes
How are snowflakes formed in such a dizzying array of patterns? Material processes - Solids, liquids and gases - Characteristics of water Learning Points Liquid water freezes at 0°C. The shape of a snowflake is changed at different...
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Isaac Newton
Find out how Sir Isaac Newton devised his laws of motion and explained how the universe works. Physical processes - Force and motion - Action and reaction Learning Points Sir Isaac Newton devised laws that explain how the Universe works....