We all know ducks quack, dogs bark, and birds chirp, but that barely scratches the surface of all the amazing ways animals have devised to talk to each other!

You might not think of volcanoes as particularly musical, but they do actually generate infrasound! And scientists may be able to use that sound to help predict when a volcano is about to erupt.

With the right questions, and careful observation, a ghost story can transform from a spooky anecdote to a scientific experiment.

You are probably aware of the fact that elephants make trumpeting noises - but did you know that most of their communication is so low pitched that humans can’t even hear it?

Sound at frequencies below 20 Hertz, the lower limit of normal human hearing.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....

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...

Find out about infrasounds – sounds that are too low-pitched to be heard by humans.
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Learning Points
Infrasounds are
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This fun, comic book-style animation showcases that animals receive different types of information through their senses, process the information in their brain, and respond to the information in different ways. Learners will explore the...

Characteristics of a Wave explores the characteristics of a wave by defining the terms wave, amplitude, crest, trough, wavelength, and frequency.