Science Buddies
LED Circuit Design: Choose Resistor Value
Learn to design LED circuits for maximum efficiency, including choosing a battery and resistors, in this electrical engineering project.
Curated Video
What is Professionalism?
What comes to mind when you hear the word "professionalism"? It's what separates you from the pack and catches the eye of management. We've been asking all of our interviewees to define the word and whether we're asking a scientist or a...
Astrum
Are We on the Verge of a Major Technological Transportation Breakthrough?
Ion Engines are the future. How far away are we from them becoming the norm?
Astrum
How the Australian Wildfires Developed
View from space of the Australian bushfires, from the December 30th 2019 to January 2nd 2020. Based on data from JAXA / JMA / Himawari.
Science ABC
Can Fire Burn When There’s No Oxygen?
Yes, fire can burn without oxygen. While oxygen is an important oxidizing agent for combustion, it is not the only one. There are alternative oxidizers such as chlorine, fluorine, and bromine that can also support burning. Furthermore,...
Science ABC
Why Doesn’t Water Burn, Despite Being Made Of Combustible Substances (Hydrogen And Oxygen)?
Water is formed as a result of the combustion of hydrogen. In simple words, water is what you get when you burn hydrogen. So, water doesn’t burn because, in a way, it has already burned. You get ashes when you burn paper; but when you’re...
Curated Video
Is This the Real Reason More Homes Are Burning in Wildfires?
For decades, conventional wisdom has told us that fuels reduction is key to protecting communities. However, the latest research shows that weather actually plays a big role as well. In fact, the vast majority of structures are destroyed...
Curated Video
Red giant
A small to medium sized star late in its life, when it has used up its hydrogen in nuclear fusion and starts burning heavier elements. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images...
Curated Video
Exothermic
A chemical reaction or process that releases heat. 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
Oxygen and Combustion
Combustion reactions are vital: from keeping us warm and cooking our food, to providing electricity and propelling rockets into outer space. What do we know about these chemical reactions? Chemistry - Reactions - Learning Points....
Curated Video
Energy Change of Reactions
Some reactions take in energy and some release energy. Why? And what are some common examples of each type of reaction? Chemistry - Reactions - Learning Points. An energy change occurs when reactions take place. Exothermic reactions...
Curated Video
Oil Spills - Environmental Impact
Offshore oil spills can lead to decades of ecological harm for marine life. How can we clean-up oil spills and limit damage to the environment? Earth Science - Human Impacts - Learning Points. Offshore oil spills float on the surface of...
Curated Video
Measuring Food Energy
We investigate the amount of energy stored in maize snacks and peanuts by burning them. The food is placed under an aluminium beaker of water before being set alight and the temperature change of the water is recorded. We can compare the...
Curated Video
Clearing Oil Spills
We investigate the effectiveness of different methods to clear oil spills from water. First, we try to burn the oil in a sample of water using a gas lighter but there is no effect. Next, we break the oil up using detergent but this does...
Curated Video
Mass of Wire Wool
We look at how the mass of wire wool changes when it is burned. Wire wool is almost 99% iron. When we burn it, it combines chemically with oxygen from the air to form iron(III) oxide. The mass of the product is more than the mass of the...
Curated Video
Fossil Fuels: Use
Fossil fuels are a finite energy source. How long will they last, and why is it so difficult and costly to extract these fuels from beneath the earth and oceans? Earth Science - Earth's Resources - Learning Points. Fossil fuels are...
Curated Video
Combustion
Or burning, a chemical reaction that requires an initial source of heat, a fuel, and an oxidising agent such as oxygen, and releases energy as heat, and often light. A Twig Science Glossary Film. Key scientific terms defined in just 60...
Curated Video
Burning – Pixelate
What is it? ... These are matches! Material processes - Changing materials - Burning A Twig Tidbit Film - Pixelate. A pixelated image unscrambles. The children have to guess what it is.
Curated Video
Burning – Did you know?
Did you know that wax is the fuel that keeps a candle burning? Material processes - Changing materials - Burning A Twig Tidbit Film - Did you know? A fascinating fact is revealed.
Curated Video
Burning – True or false
True or false ... When wood burns it undergoes an irreversible reaction? Material processes - Changing materials - Burning Learning Points Burning is an irreversible reaction. A Twig Tidbit Film - True or False? The children have to...
Curated Video
What is a force? – Odd one out
Four examples of actions that change the shape of objects are shown, but which is the odd one out? Physical processes - Force and motion - What is force? A Twig Tidbit Film - Odd one out. The children have to work out which of four...
Curated Video
Burning – Odd one out
Four images associated with burning are shown onscreen, but which is the odd one out and is not needed to start a fire? Material processes - Changing materials - Burning Learning Points An exothermic reaction releases heat energy. A Twig...
Curated Video
What is burning?
What are the three factors needed to make something burn? Material processes - Changing materials - Burning Learning Points Burning is a chemical reaction. Burning requires oxygen, a fuel source and heat. An exothermic reaction releases...
Curated Video
Fireworks
Fireworks are a feast for the senses, but what creates those amazing colours? Material processes - Changing materials - Burning Learning Points Burning requires oxygen, a fuel source and an ignition source. Burning is a chemical...