Information Transfer

Flashcard
•
Science
•
4th Grade
•
Hard
Wayground Content
FREE Resource
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16 questions
Show all answers
1.
FLASHCARD QUESTION
Front
What invention made it possible to communicate across long distances with electricity and Morse code?
Back
Telegraph
2.
FLASHCARD QUESTION
Front
____________ is a code used to transfer information using dots and dashes (long and short signals) to represent a letter, number or special character.
Back
Morse code
3.
FLASHCARD QUESTION
Front
Digital devices use _____ to send and transmit information.
Back
Binary code
4.
FLASHCARD QUESTION
Front
Put the events in order for sending and receiving a text message on a cell phone: 1. Person #2 receives the message. 2. Person #1 sends the message. 3. Radio waves are sent to the nearest cell tower.
Back
2, 3, 1
5.
FLASHCARD QUESTION
Front
What is the main purpose of the telegraph?
Back
To send messages over long distances using electrical signals.
6.
FLASHCARD QUESTION
Front
What does binary code represent in digital communication?
Back
It represents data using two states: 0 and 1.
7.
FLASHCARD QUESTION
Front
What are radio waves used for in communication?
Back
To transmit information wirelessly over distances.
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