PBS
What Does Dark Energy Really Do?
How does dark energy affect the universe's expansion? Measuring past expansion history should tell us the future expansion without ever having to count any galaxies. To measure this we need to measure the redshift-distance relationship,...
SciShow
Cymatics: Turning Sound into Art
Sound waves vibrate more than just our eardrums, they can also make visual art!
MinutePhysics
Why Do Compressed Air Cans Get Cold?
This video is about compressed air cans (aka gas dusters) and why they get cold when you spray them. They cool off because the refrigerant inside (1,1-difluoroethane) is under pressure and boils off when the pressure lowers, and energy...
TED-Ed
TED-ED: The Silk Road: Connecting the ancient world through trade - Shannon Harris Castelo
With modern technology, a global exchange of goods and ideas can happen at the click of a button. But what about 2,000 years ago? Shannon Harris Castelo unfolds the history of the 5,000-mile Silk Road, a network of multiple routes that...
SciShow
Where Did the Big Bang Happen?
The name “The Big Bang” makes it sound like there was a big explosion in one particular spot, but if that’s the case, where did it happen?
PBS
How Do You Measure the Size of the Universe?
The universe is HUGE. But, there is only so much of the universe we can ACTUALLY see, and if we wanted to measure that FINITE space, how would we do it? A gigantic ruler? One really long car ride? Or maybe it's something even more...
Curated Video
The Big Bang and the Astonishing Discoveries of the Hubble Space Telescope
The Big Bang theory is our best explanation for the origins of the universe. The Hubble Space Telescope has played a crucial role in allowing astronomers to look back in time and study the early universe. By observing distant galaxies...
Curated Video
Alveoli
Microscopic air sacs in the lungs where gas exchange takes place between blood and the atmosphere. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
Curated Video
Universe
Everything that exists. All physical matter and energy and the contents of the space between galaxies. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
Curated Video
Dark energy
A mysterious energy field present across the entire known Universe, which accounts for 70% of its mass-energy. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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
Expansion and Contraction
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...
Curated Video
Scale of the Universe
How big is our Universe? Travel from Earth through the Solar System, past our Galaxy, to the Universe beyond. Physics - Universe - Learning Points. The Universe is constantly expanding. The Universe is already billions of light years...
Curated Video
Big Bang Theory
Discover one theory about a single event over 13.8 billion years ago, that might have created our Universe. Physics - Universe - Learning Points. The Big Bang took place over 13.8 billion years ago. The Big Bang caused our Universe to...
Curated Video
Thunder and Lightning
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...
Curated Video
Frozen Balloon
We lower a helium-filled balloon into liquid nitrogen to see how the change in temperature affects its volume. When it hits the cool liquid nitrogen, the gas inside contracts and the volume of the balloon decreases. When it is removed...
Curated Video
Big Bang Evidence
Discover the scientific evidence that supports the Big Bang theory - from the expanding Universe to cosmic microwave background radiation. Physics - Universe - Learning Points. An expanding Universe, an abundance of light elements, and...
Curated Video
Cervix
The lower end of the uterus, where it joins and protrudes into the upper end of the vagina. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
Expansion and conduction – What happens next?
A balloon is dipped in liquid nitrogen ... what happens next? Material processes - Changing materials - Expansion and conduction A Twig Tidbit Film - What happens next? A short section of film is played and the children have to guess...
Curated Video
Expansion and conduction – Did you know?
Did you know that the hot air above the Earth expands and bends light, causing a heat haze? Material processes - Changing materials - Expansion and conduction A Twig Tidbit Film - Did you know? A fascinating fact is revealed.
Curated Video
Expansion and conduction – Odd one out
Four substances are shown on screen, but which is the odd one out and is not a good conductor of heat? Material processes - Changing materials - Expansion and conduction Learning Points Metals are good thermal conductors due to their...
Curated Video
Erosion and weathering
Learn how the processes of weathering and erosion sculpt Earth's landscapes. Material processes - Classifying materials - Soil Learning Points Weathering is the breaking down of rock into smaller particles. Erosion is the removal of rock...
FuseSchool
Global Impact of Deforestation | War on nature
This video discusses the global issue of deforestation, highlighting alarming statistics such as the loss of over 300 trees by the end of the video and deforestation happening at the rate of half a football pitch every second. The video...