Morse code

Morse code is a way of sending messages using a series of short and long sounds (dots and dashes). It was once used a lot for sending messages over long distances, like when people used to send messages by telegraph. The short sound (dot) stands for one letter of the alphabet, like "A" or "B". The long sound (dash) stands for two or more letters, like "XY". To send a message, you can just take a word, like "MORSE" and make a series of dots and dashes that represent that word. The dots and dashes can be written down, but also made using light or sound. That way, people could send messages over long distances without having to write down the whole word.