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WorksheetsUnit 2: Information Transfer - Lesson 1 - Part 1
Total questions: 30
Worksheet time: 23mins
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Telephone
Telegraph
Morse Code
A binary code machine
When you send a text message to the friend, what happens first after you have typed your message?
the phone encodes the letters of your message using ones and zeros
the phone sends an analog wave representing your message to another phone
the phone produces an electromagnetic wave with constant amplitude and frequency
the phone decodes the zeros and ones and converts them into letters
It seems like everyone has a cell phone now. Sounds, images and the written word can all instantly be sent using this technology. How do cell phones send information from one person to another?
Sound waves are sent through the air.
Sound waves are sent through overhead cables.
The signals are sent through underground cables.
The signals are sent through communication satellites.
A scientist working alone in her laboratory one night makes an exciting new discovery. What is the fastest and safest way for her to share the news with her team?
Send out an email describing the discovery.
Publish an article in a scientific magazine.
Announce the discovery in a television program.
Call a press conference and announce the discover.
In wireless technology, electronics inside a mobile phone converts analog sound waves to digital impulses on the _____ side and on the _____ side it converts the digital impulses back to analog sound waves.
sound, electromagnetic
electromagnetic, sound
transmitting, receiving
receiving, transmitting
The term wireless refers to a variety of technologies and devices, such as smartphones, computers, printers, headphones and speakers. A wireless network uses _____ waves to transmit signals.
radio
sound
microwaves
mechanical
Discovered in the late 1800s and fundamental to important technological advances of the 20th century, _____ silently transmit information all over the world to extend human communications.
microwaves
radio waves
seismic waves
infrared waves
Wifi is a way to send and receive internet data over relatively short distances with low-power transmitters. What type of waves are transmitted for wifi?
light
radio
seismic
sound
_______________ is the process of information being turned into a code and being moved from one place to another.
Binary code
Morse code
Information transfer
QR code
____________ is a code used to transfer information using dots and dashes (long and short signals) to represent a letter, number or special character.
Bar code
Binary code
Morse code
QR code
What is this a model of?
radio
doorbell
Morse code machine
ancient video game
The invention of ________ allowed people to communicate over long distances using Morse code.
paper
trains
electricity
boats
Decode
To convert a code into something people can understand.
A signal that can be sent through the air to send and receive information.
The brains of electronic devices. Microchips send and receive patterns that help our electronics work.
Tiny lights that make up the screens of our devices which can be turned on and off to form an image.
radio wave
A signal that can be sent through the air to send and receive information.
: The brains of electronic devices. Microchips send and receive patterns that help our electronics work.
Tiny lights that make up the screens of our devices which can be turned on and off to form an image.
The process of giving a computer instructions in a language it can understand. Also called "coding."
transmit
To send from one place to another
A series of repeating events
To convert a code into something people can understand.
A signal that can be sent through the air to send and receive information.
Developed by Samuel to send information using sound or lights.
Braille
ASL
Binary Code
Morse Code
Semaphore
Throughout history encoding has been used to convert information from one system of communication into another. What was the main purpose of early communication devices that used encoding?
to communicate at a distance
to communicate with enemies
to communicate about a natural event
to communicate in different languages
When information is sent from one place to another it is ________.
transferred or transmitted
degraded or ruined
Not letting any light through.
reflection
opaque
translucent
transparent
The wave of energy we can see is ___________
visible light
radio waves
microwaves
x-rays
Which term refers to a recorded message sent and received electronically using voice or audio format?
Voice message
Text message
Fax
What are small digital images or icons used to express emotions, ideas, or concepts in electronic communication called?
Stickers
Symbols
Emojis
Avatars
Which term refers to online platforms that enable users to connect, share information, and interact with others?
Search engine
Social network
E-commerce
Blogging platform
