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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....
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Reducing Radiation Risk
Radioactive substances can seriously damage health. Those that work with them must take care to reduce their effects. What methods can we use and how do they work? Physics - Energy And Radioactivity - Learning Points. Exposure to...
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Palm Oil: Biofuel of the Future?
Explore whether the production of palm-oil biodiesel is sustainable. Do the positive impacts for farmers and consumers outweigh the negative impacts on the rainforest environment? Earth Science - Earth's Resources - Learning Points. Palm...
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Manipulating Light
When light hits something, a number of things can happen: it can be reflected, refracted, diffracted or absorbed. But what does this mean? Physics - Waves - Learning Points. Manipulation of light is vital to our survival. Light waves...
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Solar Power - Harnessing Sun’s Energy
The Sun has the potential to meet all our energy needs, if only we could harness it efficiently. Why is it so difficult to efficiently convert and store this energy? Earth Science - Earth's Resources - Learning Points. The Sun provides...
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What is Light? - Light Energy
We can see our surroundings because of light energy. Whether light waves are being emitting from a source or being reflected, this form of energy is vital to life on Earth. Physics - Waves - Learning Points. Light is an energy that...
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The Electromagnetic Spectrum
The range of electromagnetic radiation in the electromagnetic spectrum is huge. Where does this radiation come from and how do the frequencies and wavelengths vary? Physics - Waves - Learning Points. Electromagnetic radiation is all...
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Food Basics: Proteins
Proteins are at the root of virtually all bodily functions, from growth to metabolism to transporting oxygen around the body. Learn how your body makes or ingests all the protein you need. Chemistry - Chemical Industries - Learning...
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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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Ball and Hoop
We use a metal ball and hoop to demonstrate heat expansion. When cool, the ball fits through the hoop, but there is little extra space. The ball is then heated over a Bunsen burner. When hot, the ball doesn't fit through the hoop. We see...
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Burning Bubbles
We investigate the properties of two types of gas bubbles: methane gas bubbles and bubbles of the gas we breathe out. The air-filled bubbles sink and we are unable to set them alight, while the methane bubbles float upwards and are...
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The Issues With Aid
Although aid is usually helpful to a country in need, the type of aid can affect a country's recovery. What are the arguments for and against different forms of aid? Human Geography - A Changing World - Learning Points. International aid...
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Redox Reactions
For centuries, humans have been extracting metals from molten ores. Today, the basic technique remains the same, but how does extraction work? Chemistry - Reactions - Learning Points. Metals can be extracted from rocks if they are heated...
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Fossil Fuels: Formation
Where does our natural gas, coal and oil actually come from? Discover the processes that created our modern fossil-fuel reserves, which began millions of years ago. Earth Science - Earth's Resources - Learning Points. Fossil fuels are...
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How the Oceans Formed
The same water has been on Earth for four and a half billion years. Where did this water come from? Earth Science - Weather - Learning Points. 4.5 billion years ago, the Earth's surface was too hot for water to exist. Inside the Earth's...
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Anode
An anode is the terminal from which electrons leave a system. 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...
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Source
In general, the point of origin. For example, the source of a sound wave is where it originates from. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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Sound is energy
Understand that sound is a form of energy created by vibrations. Physical processes - Sound - What is sound? Learning Points Sound is a form of energy. Sound travels in waves away from the source. Sound waves travel in all directions....
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Pancakes
We all love eating pancakes, but did you know they contain a secret ingredient – sunshine! Physical processes -Energy and energy transfer - The Sun as our main source of energy Learning Points Energy from the Sun is passed on through the...
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The birth of ancient Egypt
Find out why the ancient Egyptian Empire owed its success to to the River Nile. People and places - Physical geography - Rivers Learning Points The fertile floodplain of the River Nile allowed ancient Egyptians to grow their own food....
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Journey of a river
Discover where the Yangtze river, one of the longest rivers in the world, begins its 6000km journey. People and places -Physical geography - Rivers Learning Points Rivers develop along a course, which begins at the source and ends at the...
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Wave Nature of Light: What is Light?
By the end of this learning object, the student will be able to: Recognize the spectrum colors.86731
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Wave Nature of Light: Light Intensity
By the end of this learning object, the student will be able to: Recognize the relationship between distance and light intensity.13613
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The Rise of Renewable Energy | Nature's Power
This informative video explores various forms of renewable energy, focusing on their significance in addressing the climate crisis. It highlights how one wind turbine can power 1,500 homes for a year and delves into geothermal energy's...