Waves - Lesson 12 Flashcard

Front

What are waves?

Back

Waves are disturbances that transfer energy from one place to another without transferring matter.

Front

What are radio waves?

Back

Radio waves are a type of electromagnetic wave that can travel through air and space and are used for communication.

Front

Why are radio waves used for communication?

Back

They can be transmitted easily through air and space without causing damage.

Front

How do radio waves differ from light waves?

Back

Radio waves are like light waves but much longer and invisible to the human eye.

Front

What is binary code?

Back

Binary code is a system of representing information using two symbols, typically 0 and 1.

Front

How is binary code used in communication?

Back

It is used to communicate information using on and off signals representing 0 and 1.

Front

What does it mean to broadcast a signal?

Back

To broadcast means to transmit or transfer a signal in some form of a wave.

Front

What is the speed of radio waves?

Back

Radio waves travel at the speed of light, which is approximately 299,792 kilometers per second.

Front

What is an example of a device that uses radio waves?

Back

A common example is a radio, which receives signals transmitted through radio waves.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.