WorksheetsKS3 Data representation
Total questions: 16
Worksheet time: 10mins
Name
Class
Date
1.
What is a pixel?
a)
Picture element - the small dots that make up an image.
b)
How an image is stored on the computer.
c)
A type of image
d)
A special type of photograph
2.
A bitmap image is made up of
a)
Pixels
b)
Colours
c)
Sounds
d)
Samples
e)
Characters
3.
The number of pixels per inch in an image is known as the
a)
Dimensions
b)
Colour depth
c)
Resolution
d)
Megapixels
4.
Increasing the resolution of an image means that
a)
More pixels will be used to make up the image
b)
More colours will be used to make up the image
c)
The image size will be bigger
5.
The binary code for each pixel is used to determine
a)
Which colour will be displayed
b)
How big the image is
c)
What shape the image is
d)
How many pixels will be in the image
6.
Which is NOT an effect of increasing the resolution in an image?
a)
More colours can be displayed.
b)
More binary will be required to create the image.
c)
Larger file size
d)
Higher quality image
7.
Most graphic formats create many colours from:
a)
Red, green, blue.
b)
Red, pink, yellow.
c)
Red, white, blue.
d)
Black, white, green.
8.
In a bitmap graphic each pixel is represented in _______
a)
Denary
b)
Binary
c)
Hexadecimal
d)
By letters
9.
How many bits per pixel do you need to make 4 colours?
a)
colour depth of 1
b)
colour depth of 2
c)
colour depth of 3
d)
colour depth of 4
10.
What is the colour depth of the image?
a)
colour depth of 1
b)
colour depth of 2
c)
colour depth of 4
d)
colour depth of 16
11.
A Byte consists of this many bits
a)
2
b)
4
c)
8
d)
16
12.
A 1-bit image has this many colours
a)
2
b)
4
c)
8
d)
16
13.
Which is larger?
a)
Bit
b)
Byte
14.
Which unit of data is biggest?
a)
Megabyte
b)
Gigabyte
c)
Kilobyte
d)
Terabyte
15.
ASCII is used to
a)
Represent an image
b)
Give a binary code to a pixel
c)
Give a binary code to a character
d)
Calculate the size of a text file
16.
A USB Flash drive would most likely be measured in which unit of data?
a)
Megabytes
b)
Kilobytes
c)
Gigabytes
d)
Petabytes
100 %
