Curated Video
Musical Instruments
Different instruments can produce a wide variety of different sounds and notes, but why is this? Revealing how scientific principles combine to make music. Physics - Waves - Learning Points. Musical instruments are designed based on the...
Curated Video
Beyond Human Hearing
Humans can only hear a certain range of sound frequencies. Discover the sounds we can't hear and why they can be useful. Physics - Waves - Learning Points. The frequency of sound waves determines whether we can hear them. High-frequency...
Curated Video
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...
Curated Video
Elephants
The lives of Asian and African elephants, from what they eat, to where they live, and what's threatening them. Biology - Animal Kingdom - Learning Points. There are two main species of elephant - African and Asian. African elephants are...
Curated Video
Electricity in Medicine
Discover how doctors use electricity in the human body to stimulate and suppress muscles - and save lives. Physics - Electricity And Circuits - Learning Points. Electricity is a useful tool in medicine and saves lives. An electric shock...
Curated Video
Synaesthesia
Synaesthesia, or mixed sensory perception, leads people to "see" smells or "hear" colours. Why does this occur and what does this tell us about brain function? Biology - Being Human - Learning Points. Each of our senses has different...
Curated Video
Bell in a Vacuum
We look at how a vacuum affects how sound travels. An alarm is set off and placed under a bell jar. The air is removed from the jar to create a vacuum. We can still see the hammer of the alarm clock moving, but cannot hear the sound....
Curated Video
Kakapo
Meet the heaviest parrot in the world: the flightless kakapo of New Zealand. Biology - Animal Kingdom - Learning Points. The kakapo is the heaviest species of parrot in the world. Kakapos cannot fly, so move around the forests of New...
Curated Video
What Are Magnets?
What are the properties of magnets, and why are they useful to us? Physics - Electricity And Circuits - Learning Points. A permanent magnet is a piece of metal that possesses a magnetic field. The magnetic field is strongest at the...
Great Big Story
The choctaw code talkers of world war I
Discover the story of the Choctaw soldiers whose native language became a pivotal military code during WWI, baffling the Germans.
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
What's that sound?
Investigating different sounds you can hear in the city. The world around us - Light and sound - Sound Learning Points Some sounds are loud and some sounds are quiet. A Twig Junior Film - Core science concepts explained in an easy way...
Curated Video
Dangers of sound – Did you know?
Did you know that a hearing aid can detect and increase the volume of sound? Physical processes - Sound - Dangers of sound Learning Points Hearing aids contain tiny microphones that can help people with hearing loss. A Twig Tidbit Film -...
Curated Video
Hearing loss
Discover how exposure to high-volume sounds can damage hearing. Physical processes - Sound - Dangers of sound Learning Points High volume sounds can damage ears and cause hearing loss. Sound levels are measured in decibels. Ear damage...
Curated Video
The Nervous System - Brain Function
Learn all about the function of the brain and the nervous system. Life processes - Body systems - The brain and body Learning Points The nervous system is the brain, spinal cord and a network of nerves. The senses transmit information to...
Curated Video
Sonic Boom - Breaking the Sound Barrier
Fascinating insight into the sonic boom created when a jet plane breaks the sound barrier. Physical processes -Sound - Volume Learning Points The speed of sound in air is about 343 m/s. A sonic boom occurs when something moves faster...
Curated Video
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....
Curated Video
Journey through the ear
Journey through an ear to discover how we hear sound... Physical processes - Sound - How do we hear? Learning Points The eardrum transmits vibrations to the ossicles. The cochlea sends signals to the auditory nerve. The auditory nerve...
Curated Video
Infrasound - Low-Pitch Sounds
Find out about infrasounds – sounds that are too low-pitched to be heard by humans. Physical processes -Sound - Changing pitch Learning Points Infrasounds are too low-pitched for humans to hear. Low-pitched sounds have fewer waves per...
Curated Video
Why is there no sound in space?
Find out why there is no sound in space. Physical processes -Sound - How does sound travel? Learning Points The vibrations of vocal cords produce sound waves. On Earth sound is transmitted through air molecules. The vacuum of space does...
Curated Video
Ultrasound - Dolphin Communication
Learn how dolphins use ultrasound to communicate. Physical processes -Sound - How do we hear? Learning Points Sound travels faster in water than in air. Ultrasounds are too high pitched for humans to hear. Dolphins communicate using...
Curated Video
Why don't some animals have ears?
Do animals like snakes and grasshoppers have ears? Life processes - Humans and other animals - Humans' and other animals' needs Learning Points Humans and other animals have some common features. Some animals use organs other than ears...