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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...
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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...
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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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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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.
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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 -...
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Water and weather – Odd one out
Four processes are shown on screen, but which one is not a part of the water cycle? Physical processes - The Earth and beyond - Water and weather Learning Points Evaporation, condensation and precipitation are all parts of the water...
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Condensation and freezing
Why do water drops form on cold windows and why does water freeze? Material processes - Solids, liquids and gases - Changes of state Learning Points Condensation is the change of state from gas to liquid. Freezing is the change of state...
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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....
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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...
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Very strange liquids
Not all liquids act the same ... some can behave very strangely indeed! Material processes - Solids, liquids and gases - Liquids Learning Points Liquids do not have a fixed shape. Non-Newtonian liquids change behaviour when a force is...
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Everyday liquids
What are the properties of a liquid? Material processes - Solids, liquids and gases - Liquids Learning Points Liquids do not have a fixed shape. The speed at which a liquid flows is known as viscosity. Liquids have fixed volume. The...
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Sea salt
Find out how we extract salt from seawater on an industrial scale. Material processes - Separating mixtures - Separation by evaporation Learning Points A solution is formed when a soluble substance dissolves into a liquid. Evaporation...
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Separation by evaporation
Learn how to find out the difference between tap water and spring water. Material processes - Separating mixtures - Separation by evaporation Learning Points Evaporation can be used to separate a solution. A solution is formed when a...
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Changing state
Materials change state all the time, but how and why? Material processes - Solids, liquids and gases - Changes of state Learning Points Melting is the change of state from solid to liquid. Evaporation is the change of state from liquid...
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Cambios de Estado - Materia
En la Tierra, los materiales pueden existir como sólidos, líquidos o gases y cambiar de un estado a otro al calentarse o enfriarse, alterando sus propiedades. Procesos como evaporación, condensación, fusión y sublimación describen estas...
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द्रव्य की स्थिति के परिवर्तन | मामला | भौतिक विज्ञा | FuseSchool Hindi
यह वीडियो पदार्थ की तीन मुख्य अवस्थाओं (ठोस, तरल, गैस) और उनके बीच के संक्रमण के बारे में है। गर्मी के प्रभाव से, ठोस बर्फ पिघलकर तरल पानी में बदल जाती है, और जब तरल को गर्म किया जाता है, तो वह गैस में परिवर्तित हो जाता है। वीडियो में...