The two factors that determine the representation size of an image are .................................... and .............................................                                         [Select two answers from the given list]

An Image  of oranges has a resolution of  220⨉200 and a colour depth of 4 bits.   How many pixels are in this image?You can use calculator for this task.

There are 448 individual elements in an image. What is this number called?

How many different colours can there be in an image with the colour depth of 4 bits?

A rainbow icon has a file size of 240 bits .  Convert this file size into bytes.

Key Stage 3

A splash of colour

Digital images are composed of individual elements, arranged in a rectangular grid. The elements of a digital image are called .............................................

The number of pixels in a digital image is the image .......................................

3. The (fixed) number of binary digits used to represent each pixel’s colour is the  colour depth . How many colours are possible with a colour depth  of 7 bits?

Large number of bits representing various colours

Images with a high colour depth and high resolution are great because .................................  (Select all the options that apply)

Digital images that are formed using a binary representation of each pixel’s colour are called bitmaps or raster images. True or False?

A splash of colour

Lesson outcome