Communication Over Distances

Front

What causes sound?

Back

Vibrations are the movements that create sound.

Front

How does an emergency vehicle communicate with people?

Back

Emergency vehicles use light and sound to communicate.

Front

What allows us to see objects in the dark?

Back

Light helps us see things when it's dark.

Front

What did sailors use to communicate with other ships long ago?

Back

Sailors used Morse code to send messages.

Front

What does a bird use to tell other birds where it is?

Back

Birds use sound to communicate their location.

Front

What is light?

Back

Light is a form of energy that helps us see.

Front

What are vibrations?

Back

Vibrations are quick movements back and forth that create sound.

Front

What is Morse code?

Back

Morse code is a way of sending messages using dots and dashes.

Front

What is the purpose of sound?

Back

Sound helps us communicate and hear things around us.

Front

How do we use light in communication?

Back

We use light, like signals or flashlights, to send messages.