Understand what a pixel is and be able to describe how pixels relate to an image and the way images are displayed. "Describe the following for bitmaps: size in pixels, colour depth.
Know that the size of a bitmap image in pixels (width x height) is known as the image resolution."
Describe how a bitmap represents an image using pixels and colour depth.
Describe using examples how the number of pixels and colour depth can affect the file size of a bitmap image.
Calculate bitmap image file sizes based on the number of pixels and colour depth.
Track each student's skills and progress in your Mastery dashboards
Give this quiz to my class
Q 1/12
Score 0
What are images made up of?
30
Waves
Binary
Pixels
Pictures
Q 2/12
Score 0
What is a pixel?
30
A collection of colours in a graphic image
The name given to the colours used in images
A square in a graphic image with an assigned colour
A black or white image
12 questions
Q.
What are images made up of?
1
30 sec
3.3.6.a
Q.
What is a pixel?
2
30 sec
3.3.6.a
Q.
Why are pixels encoded into binary representations?
3
30 sec
3.3.6.a
Q.
What does image resolution refer to?
4
30 sec
3.3.6.a
Q.
What is the correct formula for calculating the file size of an image?
5
30 sec
3.3.6.a
Q.
What does the term colour depth mean?
6
30 sec
3.3.6.a
Q.
What is a bitmap?
7
30 sec
3.3.6.a
Q.
What does reducing the image resolution mean for the file size?
8
30 sec
3.3.6.a
Q.
Which of these is not an image file format
9
30 sec
3.3.6.a
Q.
Which of these file formats results in lossy compression?
10
30 sec
3.3.6.a
Q.
Why does saving a thumb nail from google, offer a lower quality image than the source file?
11
30 sec
3.3.6.a
Q.
How many colours can be represented in a colour depth of 8 bits?