Lesson Check: Communicating With Signals

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves of energy that travel through space and can carry signals. They include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

Name three devices that send or receive signals carried by electromagnetic waves.

Back

Radio, Television, Mobile Phone.

Front

What is the common feature of all signals used for communication?

Back

They all send information.

Front

True or False: Sign language and written language are examples of signals used to communicate.

Back

True.

Front

What are the steps of communication using signals in the correct order?

Back

Encode, Transmit, Decode.

Front

Which electromagnetic wave is most commonly used for communication signals?

Back

Radio waves.

Front

Define 'signal' in the context of communication.

Back

A signal is a physical quantity that conveys information, such as sound, light, or electromagnetic waves.

Front

What is encoding in communication?

Back

Encoding is the process of converting information into a signal for transmission.

Front

What does it mean to decode a signal?

Back

Decoding is the process of interpreting or making sense of the received signal.

Front

Give an example of a non-verbal signal used in communication.

Back

Body language or gestures.