This video provides a brief history of hot air balloons, explaining how they stay airborne and the science behind them. It also highlights the use of hot air in other airborne objects like sky lanterns. Overall, it offers a concise and...

There is more than one type of bone in the human body. Anatomists usually consider 5 different types, based on structure and function. Histologically, we can even split them into 2, or more. In this video, you'll meet all the types of...

A “tipping point” is when a system, with just a small amount of additional energy, is pushed from one stable state to another suddenly and dramatically. This can be a chair falling backwards. Or it can be a major earth system collapsing....

Its freezing cold outside, and you decide to take a cup of boiling water outside and throw it into the air. Instead of falling to the ground and searing a hole in the already-fallen snow& Boom! It magically turns into snow! However, have...

The fake puddles of water that we see on the road on a sunny day is due to an optical phenomenon called a mirage, which is caused by the refraction (or bending) of light rays due to different temperatures of the air above the road. On a...

Yes, water expands when it freezes. Note that the word expands here indicates an increase in volume. So, a technically sound way to put it would bewaters volume increases when it freezes. This statement is accurate, and you can test its...

When it comes to eating fruits, there is an incredibly wide variety, as they come in all shapes and sizes, textures, flavors, and colors. When it comes to fruits like apples and grapes, most people know that its completely safe, and even...

A black hole is a celestial body or simply a place in space where the gravitational pull is so high that nothing, not even light can escape it. This is why it's completely black, and hence it's called a black hole. A black hole's...

Lying on the lowest point on the Earth, the hypersaline Dead Sea is one of the most fascinating places on this planet. People float effortlessly here and that is the major attraction of the Dead Sea. But besides this natural buoyancy,...

In an atom, the small, dense, positively charged structure at its centre, containing the protons and neutrons.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images...

A small, extremely dense star characterised by high temperature and luminosity, no longer capable of nuclear fusion.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning...

The uppermost layer of the Earth that forms the continents and coastal sea floor, sitting on top of a layer of denser rock called the mantle.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60...

Mercury is an elusive and toxic element.



Chemistry - Periodic Table - Learni

ng Points.

Mercur

y is a rare element.

Mercury is

a liquid at room temper

ature.

Mercury is highly...

Discover the forces at work underwater, which dictate why large boats float but small pebbles sink. Physics - Forces - Learning Points. The buoyant force is an upward-acting force determined by the weight of the displaced water. Ships...

Hot air balloons rely on heat alone to keep them in the sky. How does this work? Physics - Energy And Radioactivity - Learning Points. Hot air rises in cool air because it is less dense. The hot air within a hot air balloon creates the...

Discover one theory about a single event over 13.8 billion years ago, that might have created our Universe.



Physics - Universe - Learni

ng Points.

The Big Bang took place over 13.



8 billion years...

Thunderstorms can be an impressive sight, but how are they formed? What is happening deep inside certain clouds to create such huge bolts of energy? Earth Science - Weather - Learning Points. Thunderstorms form in dense tall clouds...

A super-current runs from the Arctic past South America to the Indian Ocean. This is major factor influencing our climate, controlling everything from currents to the weather. Earth Science - Human Impacts - Learning Points. The great...

Melting icecaps are threatening one of the most important currents in the world, the Great Ocean Conveyor. If it stopped, it could have devastating impacts on our climate. Earth Science - Human Impacts - Learning Points. The Great Ocean...

The weather systems on our planet are all driven by one thing: air. Discover how our weather is driven by energy from the Sun, affecting the movement of air. Earth Science - Weather - Learning Points. Our weather is a chaotic and complex...

How do the clouds closest to the Earth affect our weather? How are they formed and what do they look like? Earth Science - Weather - Learning Points. Temperature, humidity and air pressure produce ten different types of cloud. Those at...

The unique force created by hydrogen bonding gives water some unique properties, which seem to defy the laws of nature. Chemistry - Atoms And Bonding - Learning Points. Hydrogen bonding is a special force of attraction between water...

Rain is essential to our planet. Without it, all life on Earth would struggle to survive. How do rain clouds form and what determines whether it rains or not? Earth Science - Weather - Learning Points. Rainfall comes from the clouds...

Transition metals are the largest group in the periodic table. Find out what similarities they share, and how we make use of these metals. Chemistry - Periodic Table - Learning Points. Transition metals are found as a block in the middle...