Digital Information (Unit 2, Lessons 1-6)

QuizÂ by Brea Colagross

Feel free to use or edit a copy

includes Teacher and Student dashboards

### Measure skillsfrom any curriculum

Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.

• edit the questions
• save a copy for later
• start a class game
• view complete results in the Gradebook and Mastery Dashboards
• automatically assign follow-up activities based on studentsâ€™ scores
• assign as homework
• share a link with colleagues
• print as a bubble sheet

### Our brand new solo games combine with your quiz, on the same screen

Correct quiz answers unlock more play!

10 questions
• Q1
1000 megabytes is equivalent to approximately ______________.
1TB
1 GB
1EB
1KB
120s
Edit
Delete
• Q2
A gigabyte would be a good estimate for the size of which type of file?
.jpeg (image)
.txt (text)
.mov (video)
120s
Edit
Delete
• Q3
A jpeg file would typically be measured in _______________.
petrabytes
gigabytes
kilobytes
megabytes
120s
Edit
Delete
• Q4
An audio file, such as an MP3, would typically be about how large?
120s
Edit
Delete
• Q5
What is data compression?
Representing the same information with more bits
Representing the same information with completely different bits
Representing the same information with an equal number of bits
Representing the same information with fewer bits
120s
Edit
Delete
• Q6
A heuristic is ___________________.
A problem solving approach to find a solution where there is only 1 solution that will work.
A problem solving approach to find an exact solution.
A problem solving approach to find exactly 5 solutions to a problem.
A problem solving approach to find a satisfactory solution where finding an optimal or exact solution is impractical or impossible.
120s
Edit
Delete
• Q7
A(n) _____________ is the fundamental unit of a digital image, typically a tiny square or dot which contains a single point of color of a larger image.
pixel
image
compression
RGB
120s
Edit
Delete
• Q8
How many bytes (or bits) are required to encode an image that is 16 pixels wide and 18 pixels tall, if you encode each pixel with 3 bytes (24 bits) of RGB data.(Don't forget to add in the metadata! -- you should assume that we are using the file format used in this lesson with metadata that had 1 byte each for width, height and bits-per-pixel.)
867 bytes
288 bytes
972 bytes
1047 bytes
120s
Edit
Delete
• Q9
_______________ is a data compression method that uses inexact approximations, discarding some data to represent the content.
Lossy Compression
Pixelation
Text Compression
Lossless Compression
120s
Edit
Delete
• Q10
Which type of file fits the description? Compressed Image - Lossy
JPEG
BMP
MP3
WAV
120s
Edit
Delete

Teachers give this quiz to your class