Professor Dave Explains
Geomaticist Nigel Van Nieuwenhuizen (Get to Know a Scientist!)
New ReviewWhat is geomatics? Why it's the branch of science that deals with the collection, analysis, and interpretation of data relating to the earth's surface. How is it done? Well we've got Nigel here to tell us all about it! You may know about...
Curated Video
Evaporation and condensation in the water cycle
Pupil outcome: I can identify the part played by evaporation and condensation in the water cycle. Key learning points: - Water doesn’t leave Earth’s atmosphere. It moves around in what is called the water cycle. - Water evaporates from...
Curated Video
Changing state: liquid to gas
Pupil outcome: I can observe water change from the liquid state to the gas state. Key learning points: - Water in the liquid state can change into water in the gas state (water vapour). - In its gas state, water is invisible, can flow,...
Curated Video
Understanding and ordering how bees make honey
Pupil outcome: I can understand the honey-making process and sequence it in order. Key learning points: - Honey making is a complex, natural process which takes a very long time. - Bees visit thousands of colourful flowers to collect...
Learning Mole
How Does it Work? - Water Cycle
This video is explaining how water cycle works for kids.
Curated Video
Reversible Reactions - Experiment
Describes experimental setups to demonstrate reversible reactions.
Curated Video
The Water Cycle Explained: From Evaporation to Precipitation
In this fun and engaging video, two friends explore the concept of the water cycle in a simple and relatable way. From evaporation to condensation and precipitation, they break down each step with easy-to-understand examples. By the end,...
Veritasium
Why Are 96,000,000 Black Balls on This Reservoir?
I took a boat through 96 million black plastic balls on the Los Angeles reservoir to find out why they're there. The first time I heard about shade balls the claim was they reduce evaporation. But it turns out this isn't the reason they...
Curated Video
The Worst Drought in 1200 Years
The Colorado Basin provides water to over 40 million people in 7 US states and it is currently experiencing its worst drought in 1200 years! But unlike other droughts, our actions may have real impacts on the outcome and it’s very likely...
Science ABC
Why Does Water Evaporate at Room Temperature?
Water evaporates at room temperature because the molecules at the top of the liquid have less intermolecular attraction than those within the bulk. When the top layer is exposed to sunlight, some molecules gain enough kinetic energy to...
Curated Video
Dissociate
To break apart an ionic compound into its constituent ions. 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...
Curated Video
Endothermic
A chemical reaction or process that absorbs heat from the surrroundings. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
Curated Video
Evaporation
The vaporisation of a liquid that takes place at its surface, as molecules with more energy change from a liquid to gas. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
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...
Curated Video
Changing States of Matter
Water can either be a solid, a liquid or a gas. How does matter change state? Chemistry - Atoms And Bonding - Learning Points. Ice, liquid water and steam all consist of exactly the same molecules. Evaporation occurs when the temperature...
Curated Video
The Water Cycle
All water on planet Earth is constantly cycled from the atmosphere, into reservoirs, and through plants and animals. The Earth's water has completed this cycle around 8 million times. Earth Science - Weather - Learning Points. Water on...
Curated Video
Hurricanes
Hurricanes are renowned for their destructive power and the devastation they leave behind. But how do they form and where? Earth Science - Weather - Learning Points. Hurricanes are tropical storms with constant wind speeds. Hurricanes...
Curated Video
Water Uptake in Plants
We place two privet hedge shoots under different conditions to see how the amount of water they draw up will change. They are both placed in measuring cylinders with the same amount of water and a layer of oil is added to the top to...
Curated Video
Filtration and Evaporation
We use filtration and evaporation to separate out a mixture of water, sand and salt. The sand is removed using filtration, as it did not dissolve in the water. The remaining solution is heated until the water evaporates, leaving behind...
Curated Video
Distillation of Ink
We use distillation to remove the water from ink. The ink is heated in a conical flask with a delivery tube running to a beaker. The water has a lower boiling point and so it evaporates before the ink. The water condenses as it travels...
Curated Video
Where does rain come from?
Exploring where the rain in a puddle comes from. Our universe - Planet Earth - Weather Learning Points Rain is produced when water vapour in the clouds condenses and falls to the Earth’s surface. A Twig Junior Film - Core science...
Curated Video
Separation by evaporation – True or false
True or false ... All liquids boil at 100°C? Material processes - Separating mixtures - Separation by evaporation Learning Points Different liquids have different boiling points. A Twig Tidbit Film - True or False? The children have to...
Curated Video
Minerals – Did you know?
Did you know that there are caves that are made entirely of salt? These were formed 6 million years ago. Material processes - Classifying materials - Minerals A Twig Tidbit Film - Did you know? A fascinating fact is revealed.
Curated Video
Separation by evaporation – Spot the...
Six substances are shown on screen ... can you spot the water-soluble substances? Material processes - Separating mixtures - Separation by evaporation Learning Points Seawater can be separated using desalination. A Twig Tidbit Film -...