Los sonidos pueden ser muy diferentes: extremadamente débiles o insoportablemente intensos, agudos y estridentes o graves y atronadores. ¿Por qué son tan diferentes? Twig - Física - Las ondas - El sonido Claves de aprendizaje ...

Los gases nobles fueron uno de los últimos grupos de elementos que se descubrieron. Son muchas las aplicaciones que tienen en el mundo que nos rodea, desde los globos de helio hasta su presencia en las bombillas. Twig - Química - La...

El hallazgo de Robert Bunsen permitió identificar los elementos con mayor facilidad e incluso condujo al descubrimiento de nuevos elementos. Twig - Química - Los átomos y los enlaces - Los átomos Claves de aprendizaje Los...

Aprende sobre la destilación fraccionada y cómo se usa para separar petróleo crudo. Twig - Los procesos de los materiales - Separación de las mezclas - Otros medios de separación Claves de aprendizaje La destilación separa...

Astronauts onboard the ISS get their breathable oxygen in two main ways - through systems onboard the ISS that generate breathable oxygen and through resupply missions that deliver breathable oxygen to the ISS. There is plenty of oxygen...

Contrary to popular belief (as set by movies), cars are not very prone to explosions, and even a car that is on fire is very unlikely to explode. The necessary conditions for an explosion to take place are not met after a car experiences...

The term climate change is used to denote the long-term changes in the weather patterns in a given region. Another term often interchanged with climate change is global warming. Global warming is formally defined as a rise in Earth's...

Yes, metals can exist in gaseous forms. To illustrate, let's consider lead, which has a boiling point of 1740°C. When heated past its melting point of 327°C, lead turns into a gas at 1740°C. Another notable example is mercury, which...

Out of all the gases in our farts, hydrogen, and methane are the flammable ones. This means they can be set on fire. Even though you produce flammable gases, it isnt enough to create a flamethrower. Humans can fart anywhere between...

While Neptune, the most distant planet in our Solar System, is 4.5 billion kilometers away from the Sun, Uranus, the second-farthest planet, is just 2.88 billion kilometers away. Uranus is more than a billion kilometers away from...

One of the most important factors when it comes to mixing any gas with a liquid is solubility, and carbon dioxide is highly soluble in water. In fact, it's the most soluble of the common, non-toxic gases with high solubility. To give you...

Water especially the one which flows through the pipe contains atmospheric gases, such as nitrogen and oxygen, dissolved in it. As the glass filled with water sits out for a few hours, its temperature rises slightly (water gets warmer),...

The layer of the atmosphere above the stratosphere but below the thermosphere, from 50 to 85km altitude. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....

Easily ignited, able to catch fire easily. Flammable materials may be solids, liquids, or gases. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...

Elements in group 8, also called group 0, of the periodic table. 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...

A mixture of two or more substances which appears to be a single, uniform medium, with no visible separation between its components. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...

Discover the Earth's atmosphere: what it is and what it is made of? Chemistry - Periodic Table - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic, or use to grab attention at the start...

A substance that is able to flow freely. 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 concepts and key...

Or primordial soup, refers to the medium in which the first life on Earth may have originated. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...

Discover how different materials react to heat, and why this can be both useful and dangerous. Physics - Energy And Radioactivity - Learning Points. Temperature affects the size and shape of an object due to the expansion and contraction...

The Earth is billions of years old and was once a very hostile place. Eventually, a single cell was formed that evolved and reproduced. What conditions produced this first life on Earth? Biology - Cells And DNA - Learning Points....

The air we breathe is made up of a mixture of gases. Discover the invisible forces of gas at work around us. Physics - Forces - Learning Points. The air we breathe is made up of gases including nitrogen, oxygen and carbon dioxide. The...

Where does Earth fit into the Solar System and what makes this planet unique? Physics - Our Solar System - Learning Points. Earth is the third planet from the Sun. 71% of Earth is covered in liquid water, which is vital for life. Earth...

A look at the biological functions that produce burps and farts. Biology - Human Body - Learning Points. Burps are caused when swallowed air forces open the stomach sphincter and travels up the oesophagus. Farts are caused when swallowed...