Curated Video
The Ozone Layer
The world has already faced a major global climate challenge: the hole in the ozone layer, discovered in 1985. Find out what ozone is, why it's important, and how the ozone hole is being repaired. Earth Science - Human Impacts - Learning...
Curated Video
Tropical Rainforests
Tropical rainforests are competitive environments where plants must compete for space and resources. But other dangers threaten the balance and future of these important habitats. Biology - Ecosystems - Learning Points. Tropical...
Curated Video
Cloud in a Bottle
We create a cloud in a bottle using warm water and smoke. Some warm water is placed in a plastic bottle and then some smoke is drawn in using a glowing splint. The bottle is sealed and then squeezed and released. The change in pressure...
Curated Video
Can Crusher
We demonstrate the effects of imbalances of pressure. A metal can is crushed by atmospheric pressure. We add some water to a can and boil it until the can is full of water vapour. It is then sealed and left to cool and after a few...
Curated Video
The Bends
The potentially deadly threat changes in pressure pose for divers. What happens when a diver experiences the bends, and how can they be saved? Physics - Forces - Learning Points. The Bends is decompression sickness, which affects divers...
Curated Video
Inventions to Save the Planet
Discover some geo-engineering techniques that scientists are developing to manipulate Earth's climate. What are they and how would they work? Earth Science - Human Impacts - Learning Points. Geo-engineering strives to use technology to...
Curated Video
Climate Influences
Climate varies across the world, producing distinct climate zones. Discover the many factors that create these differences. Earth Science - Weather - Learning Points. Climate varies across the world. The world can be divided into six...
Curated Video
Northern Lights
Discover how the chemical reactions which produce the extraordinary colours of the Northern Lights have their origins in outer space. Chemistry - Atoms And Bonding - Learning Points. Aurora Borealis, or Northern Lights, is a natural...
Curated Video
Climate Cycles
How climatologists use ice cores, cylindrical cones of ice drilled from glaciers, to reveal Earth's historical cycles of climate change. Earth Science - Human Impacts - Learning Points. The Earth has natural, long cycles of climate. The...
Curated Video
Santorini: Looking for Atlantis
Could Atlantis, the mythical city which sank beneath the sea, be based in historical fact? The story of how a volcanic eruption on Crete may have inspired this enduring myth. Earth Science - Geology - Learning Points. In 1630BC, the...
Curated Video
Venus 1: Atmosphere
The first attempts to land a probe on a different planet. Scientists hoped an Earth-like world might lie beneath Venus' dense atmosphere, but a very different reality awaited. Physics - Our Solar System - Learning Points. Venus was...
Curated Video
Planetary nebula
A glowing cloud of dust and gas surrounding a star towards the end of its life cycle. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
Lightning - Atmospheric Discharge
A high-current electrical discharge in the atmosphere that may occur during thunderstorms, or sometimes dust storms or volcanic eruptions. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...
Curated Video
Radio waves
The lowest frequency range of electromagnetic radiation, with wavelengths from millimetres to many kilometres. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Troposphere
The lower and most dense part of the atmosphere, extending to an altitude of about 20km at the equator and 11km at the poles. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
Curated Video
Transpiration
The loss of water vapour from plants to the atmosphere. 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...
Curated Video
Weather
The state of the atmosphere at a specific time and place, including factors such as temperature and pressure, wind speed, and precipitation. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...
Curated Video
What is weather?
Check out the various forms of weather, what causes it, and how it affects our lives. People and places -Physical geography - Weather Learning Points The weather is the current state of the atmosphere in a particular location on Earth....
Curated Video
Expanding oceans
Why are sea levels rising at twice the rate that scientists predicted? Material processes - Changing materials - Expansion and conduction Learning Points Thermal expansion is due to molecules gaining energy. The thermal expansion of ice...
Curated Video
Meteorologists
Understand how meteorologists can predict the weather. Physical processes -The Earth and beyond - Water and weather Learning Points Meteorologists try to predict, or forecast the weather. Areas of high pressure are often dry and sunny....
Curated Video
Water cycle
Learn all about the Earth's water cycle. Physical processes -The Earth and beyond - Water and weather Learning Points Water constantly recycles itself through a process called the water cycle. Evaporation: the change of liquid water into...
Curated Video
The future of energy
Explore the ways in which scientists are developing new sources of energy. People and places -Future of energy - The future of energy Learning Points Science helps with developing cleaner and more efficient energy sources. A Twig...
Curated Video
Why is the Sky Blue? - Atmospheric Colors
Find out why the sky is blue. Physical processes -Light - White light Learning Points The Sun emits white light. White light can be split into the spectrum of colours by a prism. Different colours have different wavelengths. A Twig...
Curated Video
Weather vs. Climate
What's the difference between climate and weather? People and places -Physical geography - Climate Learning Points Climate refers to the average weather conditions in a region over many years. The main climate zones are tropical,...