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Communication Over Distances

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What you will learn from this videoWhat you will learn
- To communicate over distances we can use light.
- We can also use sound to communicate.
- We receive messages through light and sound every day.
- Discussion Questions
Before Video
How do you use sound to communicate? ANSWERSome of the ways we use sound to communicate include talking, beeping a horn and ringing a bell.
Some of the ways we use light to communicate include traffic lights and the flashing lights of a police car or fire truck.
To communicate with someone far away you can use a telephone, video chat or text message.
To invite them over, to say hello, to share good news, etc.
We use light to see where our food is located, to see a teacher and to watch TV. We use sound to hear, listen to music and talk.
Video on the computer, TV, people talking, bell ringing, etc
After Video
How do fire trucks and police cars communicate with people?ANSWERThey use sirens and flashing lights to communicate with light and sound. Their message is that there is an emergency and you should get out of the way!
Possible answers: Morse code, flashing lights of a car, a light house warning boats.
Each letter of the alphabet is represented by a code of short and long flashes of light.
Sirens can communicate an emergency; spooky music can communicate that something scary is about to happen in a movie.
Animals might warn other animals about danger nearby. Crickets might chirp to let other crickets know where they are. Birds often sing to tell other birds where they are.
Sound waves from your voice vibrate down the string and into the cup of your partner.
- Vocabulary
- Communicate DEFINE
To send or receive a message.
- Sound DEFINE
Noise caused by an object vibrating.
- Light DEFINE
Allows us to see objects in the dark.
- Message DEFINE
Information that is sent or given to someone.
- Distance DEFINE
How far away something is.
- Morse Code DEFINE
A special code used to communicate letters and numbers using light or sound.
- Communicate DEFINE
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