Mr. So demonstrates sound wave interference.

Reflection, Interference, and Transmission - Exit Ticket 

A bell can be heard ringing within a bell jar. The bell jar is connected to a vacuum pump and the air is slowly removed. Once a vacuum has been achieved the pumped is turned off and air is allowed to slowly re-enter the bell jar.

Bell in a Bell Jar

Echolocation allows animals to build up an understanding of their surroundings but how does it work? 
Subscribe to Earth Unplugged for more amazing animal videos - http://bit.ly/SubscribeToEarthUnplugged
 

 Animals use echolocation to hunt and better understand their surrounds. Animals that practice echolocation create a series of sounds, they can then infer from the strength, pitch and time of the echo where prey are and how they are moving though the surroundings. 

Watch more videos from Earth Unplugged
Animals In Slow Motion And Stunning Time-lapse Photography http://bit.ly/EarthUnpluggedSlowMotionTimelapse
Expeditions and Location Films http://bit.ly/EarthUnpluggedExpeditionsAndLocationFilms
Big Questions With Maddie Moate http://bit.ly/BigQuestionsWithMaddieMoate
Wilderness Sessions http://bit.ly/WildernessSessionsFilms

Check out the other two channels in the BBC Earth network:
BBC Earth: http://bit.ly/BBCEarthYouTubeChannel
BBC Earth Lab: http://bit.ly/BBCEarthLabYouTubeChannel
 
About BBC Earth Unplugged
We're Earth Unplugged, and we make films about the incredible natural world and the animals that live here exclusively for YouTube. We investigate the conundrums, quirks and beautiful science of our amazing planet, delving into the BBC vaults and mixing it up with our own stuff to take a brand new look at Earth. From animal behaviour in slow motion to expedition films we’ve got you covered.

Our planet is mind-blowing. Join us as we explore what it has to offer. 

Subscribe for more: http://bit.ly/SubscribeToEarthUnplugged
 
You can also also find the BBC Earth community on Facebook, Twitter and Instagram.

Want to share your views with the team behind BBC Earth and win prizes? Join our fan panel here: https://tinyurl.com/YouTube-BBCEarth-FanPanel

This is a channel from BBC Studios, trading as BBC Studios, who help fund new BBC programmes.

What Is Echolocation? | Earth Unplugged

A clip from the 2011 Channel 4 documentary, 'The Boy Who Sees Without Eyes', about the truly amazing Ben Underwood.  After losing both his eyes to retinal cancer at 3 years old Ben has developed an echolocation technique to navigate the world around him.

Record ID: 100085

Access the full clip here: https://licensing.screenocean.com/record/100085

To license this clip, order a low resolution screener, or for expert assistance researching into the Screenocean archive contact: info@screenocean.com. Record ID: 100085

Website: www.screenocean.com

Follow us on Social to be kept updated with our latest news & collections:
Twitter: www.twitter.com/Screenocean
LinkedIn: www.linkedin.com/company/screenocean/
Youtube:  @screenocean  Subscribe for more glimpses into our extensive archive.


#documentary #Footage #StockFootage 

Screenocean provides access to unique and quality content from around the world, captured from 1896 to the present day. Discover rare and inspiring footage including momentous historic newsreels, entertainment programmes, and over 30 million iconic images. Spanning 3 centuries, we help bring your stories and projects to life. Screenocean’s footage library includes clips from Reuters News Archive, Channel 4, Channel 5, Warner Bros Television Productions UK, Clips & Footage, BAFTA and Cover Images. Searchable 24/7, get footage for TV, film, education, advertising, corporate events, museums, music videos and more.

Boy who lost his eyes to cancer uses echolocation ('The Boy Who Sees Without Eyes', 2011)

A large wave pulse comes in from the left side of the screen, a smaller wave pulse comes in from the right side of the screen. Observe the waves constructively interfere with one another and continue to move in the same direction they were originally moving until they reach the end of the spring and bounce back.

Constructive Interference (Waves of Different Heights).mov

Reflection, Interference, and Transmission - Student Presentation 

Reflection, Interference, and Transmission - Teaching Presentation 

Reflection, Interference, and Transmission - Student Lesson Outline 

Reflection, Interference, and Transmission is a lesson by Teach Science with Fergy, containing engaging videos, presentations and activities to help develop students' science knowledge.

Sound wave interference

Science Resource Description