Read about Ben Underwood, the blind boy who was able to locate objects by making clicking noises with his tongue.
Watch a video about how dolphins use echolocation.
Get a group together and mark off an area about the size of a classroom. Choose one person to be the dolphin and the rest get to be fish. The dolphin has to be blindfolded, but whenever they say ‘Echo!’ any fish around them have to answer ‘Fish!’ How long does it take for the dolphin to gobble up (catch) all the fish?
Learn about Ben Underwood, a boy who was blinded by cancer, but who used echolocation to do just about everything a seeing person could do. Check out the website his mother created, or read news articles to learn about how he did it. Imagine what it might be like to live life if you were Ben.
Echolocation is a process for locating distant objects by sending out sound waves which are then reflected back to the sender.
Sonar is a system for finding objects under water. It sends out pulses of sound towards the object and measures them after they hit the object and return.
