How to use semaphore flags

Physical education

A method of communicating messages using flags to send individual letters.

A method of communicating messages using flags to send pictures.

A method of communicating messages using flags to send words.

A football referee pointing in the direction of the throw in.

A netball official using a whistle to stop the game.

An athletics umpire signalling with a flag a legal change over in 4x100m relay.

What sports situation might use flags as non-verbal communication?

What is the correct definition of non-verbal communication?

In which sport do umpires use flags to communicate?

True or false? Communication can be verbal and non-verbal.

What is a form of non-verbal communication that is regularly used by people?