KS3 ICT: Pixels and Networks

A pixel is defined as...

• A tiny triangle of colour, that when combined with other pixels forms a digital image.

• A tiny square of colour, that when combined with other pixels forms a digital image.

• A mathematical line, that when combined with other lines forms a digital image.

• A tiny rectangle of colour, that when combined with other pixels forms a digital image.

True or False?

The word "pixel" is short for "picture element".

• True

• False

How many colours are there in a single pixel?

• One

• Two

• Three

• Four

Select the colour which is NOT contained within a pixel.

• Red

• Blue

• Yellow

• Green

Select the correct answer.

Image quality is affected by what?

• Resolution

• Image Colour

• Pixel shape

Image resolution is the number of pixels in a specific area of an image. It is expressed as (dpi). What does dpi stand for?

• Data per inch

• Disks per inch

• Dots position images

• Dots per inch

How many colour variations can each pixel generate?

• 16,000

• 1,600

• 16,000,000

• 160,000

Tick the correct answers.

Which of these devices use pixels?

• Textbook

• Mobile phone

• Tablets

• Computer console

• Computer monitor

True or False?

A network is defined as a group of interconnected computers.

• True

• False

Tick all of the correct hardware devices found in a "traditional computer network"

• Mobile phone

• Desktop computer

• Server

• Camera

• Printer