Vocabulary
A pattern of short and long beeps or dots and dashes used to send messages
Morse code
What two things are used to form patterns representing letters and numbers in Morse code?
Dots and dashes
Before phones and computers, people used this code to send messages with patterns.
Morse code
When Dr. Jeff compared three pictures, which picture looked the clearest?
The picture made with 1,000,000 tiny screen parts
What does a device need before it can follow a command?
Instructions
To change a code into something people can understand.
Decode
What two symbols do computers use to form patterns and code information?
1s and 0s
In Morse code, letters and numbers are represented by different patterns of these.
Dots and dashes
Why does a higher-definition image look clearer?
It has more tiny parts showing details
True or false: Information goes directly from one cell phone to another cell phone.
False
A signal that can travel through the air to send and receive information.
Radio waves
What are the three colors of light that make up pixels on a screen to create colors?
Red, green, and blue
Morse code messages must be changed back into words so people can understand them.
Decode
What reads the information stored on a CD?
A laser
What helps cell phone messages move between phones?
Cell towers
Tiny lights that make up the screen and turn on or off to form an image.
Pixels
True or false: Information is stored on CDs using tiny holes burned with lasers.
True
Morse code and computer code are similar because both use these to transfer information.
Patterns
After a CD player reads the stored information, what does it turn the information into?
Sound
Before information could be transferred electronically, what was one way people shared messages?
By writing letters
The process of giving a computer instructions in a language it understands.
Computer programming
What does a TV remote control send to the TV?
A signal
Why was Morse code important for communication?
It helped people send messages over long distances quickly.
Where can a phone store music instead of using a CD?
Inside the phone’s memory
Why do devices need information to be organized in a way they can read?
So the device can follow the message correctly