Curated Video
How to Pick a Road Bike
Howcast - Learn how to pick a road bike from racer Alexander Barouh in this Howcast road cycling video.
Curated Video
What Are Speaker Stands?
Howcast - Learn all about speaker stands from audio expert Jon Zimmer in this Howcast video.
Curated Video
Could vibrations play a role in a building collapse?
People who study old buildings are raising awareness about how fragile they can be. Montreal is full of century-old buildings including one that partially collapsed in the Saint-Henri neighbourhood.
Curated Video
How Do Humans Hear Sound?
A video entitled “How Do Humans Hear Sound” which describes the parts of the human ear and how those parts send signals to the brain.
Curated Video
The Science of Sound: How Sound Waves Reach Your Brain
This video explains how sound waves travel through the air, solids, and liquids to reach our ears. It explores how vibrations create sound waves, which are collected by our ears and make our eardrums vibrate. Our brain recognizes these...
Astrum
How Mars Stumped NASA Engineers
NASA's InSight has run into a few difficulties since it landed. Can scientists overcome them?
Science ABC
Tensor Tympani Muscle: Why Do You Hear A Rumbling Sound When You Close Your Eyes Too Hard?
The tensor tympani muscle is a tiny muscle in the middle ear that helps dampens external sounds falling on the ear. The tensor tympani muscle originates from the Eustachian tube, which is also known as the auditory tube. From there, this...
Science ABC
Can You Hear Sound in Space?
Space is full of radio waves, plasma waves, magnetic waves, gravitational waves, and shock waves, all of which can travel in space without a medium. These waves are recorded by instruments that can sense these waves, and the data is...
Curated Video
Mechanical wave
A mechanical wave is one that is carried by vibrations in a physical medium, and which therefore requires a medium in which to propagate. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images...
Curated Video
Polarisation
Polarisation is the process by which a transverse wave, such as a light wave is made to oscillate in one plane only. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Frequency
The rate at which a repeating event occurs, usually measured in counts per unit time. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
Longitudinal wave
A waveform in which the vibrations of the medium it is propagated through are in the same direction as the wave's travel. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
Curated Video
Resonance: How Sound Changes Across Different Mediums
Sounds can change as they move from one medium to another. Under the right circumstances the effect is surprising and extreme. Physics - Waves - Learning Points. Sound is a wave that is created by vibrating objects. Every object has a...
Curated Video
What is an Earthquake?
The earth below our feet is continually moving. How do changes underground lead to effects on the surface, and what happens to change these movements into devastating earthquakes? Earth Science - Geology - Learning Points. Movement of...
Curated Video
Predicting Volcanic Eruptions
Learn how scientists can predict volcanic activity using seismology to monitor lava patterns deep underground. Earth Science - Geology - Learning Points. Scientists use seismology to predict an eruption. A "long-period event" involves...
Curated Video
How We Hear
How our ears hear different frequencies, and how they work with the brain to turn these into sounds which we understand. Biology - Being Human - Learning Points. Sounds are simply movements of air molecules. Our ears are extremely...
Curated Video
Heat Transport
Conduction, convection and radiation are all ways in which heat is transported. How does each work, and what are they useful for? Physics - Energy And Radioactivity - Learning Points. The three types of heat transport are conduction,...
Curated Video
What is Sound?
Sounds can vary greatly: extremely quiet or deafeningly loud, high and shrill to low and booming. Why are they so different? Physics - Waves - Learning Points. Sound is a vibration passed to and fro along particles forming a wave. It can...
Curated Video
Dancing Polymer
We create a polymer using cornflour and water called oobleck. Oobleck is a non-Newtonian liquid that behaves like a solid and a liquid. When placed on a speaker, the vibrations cause the polymer to constantly change its behaviour and it...
Curated Video
The Senses
We make sense of the world around us through touch, smell, sight, taste and sound. But what are these senses and how does the body and brain process them? Biology - Being Human - Learning Points. Our senses detect information from our...
Curated Video
Vibrations - Sound Creation
Sounds are made by tiny movements called vibrations. The world around us - Light and sound - Vibrations Learning Points Some sounds are loud and some sounds are quiet. Without a vibration there is no sound. A Twig Junior Film - Core...
Curated Video
How does sound travel?
Sounds travel in waves. The world around us - Light and sound - Sound Learning Points Sounds are made by tiny movements called vibrations. Sound energy travels in waves. These vibrations travel out from the sound source in all...
Curated Video
Tuning an orchestra
Find out how musicians tune their instruments. Physical processes - Sound - Changing pitch Learning Points Pitch depends on the frequency of sound waves – the number of waves per second. Low-pitched sounds have fewer waves per second...
Curated Video
Vibrations - Sound Transmission
Dive into alligator-infested water to understand how vibrations enable these reptiles to communicate. Physical processes -Sound - What is sound? Learning Points Sound is caused by the vibration of molecules. Vibrations travel in all...