AudioVisual-Data representations

This image consists of individual elements. What are they called?

What is the colour depth of this image

• 7 colours

• 8 colours

• 3 bits

• 4 bits

How many bits are needed to represent this image

• 3

• 90

• 270

• 630

If this image uses ‘RGB colour’, then how many bits are used to represent the colour of each pixel?

• 3

• 8

• 24

• Over 16 million

The resolution of this image is 600⨉400. what does that mean?

• It consists of 600 pixels and has 400 colours. .

• It consists of 240,000 pixels.

• It requires 240,000 bits to be represented.

• It requires 240,000 bytes to be represented

The technical specifications of your new phone report that it has an 8-megapixel camera. What does that mean?

• It takes pictures that consist of 8 big pixels.

• It takes pictures that consist of 8 thousand pixels.

• It takes pictures that consist of 8 million pixels.

• It takes pictures that are 8 megabytes in size.

Select the definition that you find most appropriate for the resolution of an image:

• How ‘sharp’ the image is

• How many pixels the image consists of

• How many different colours there are in the image

• How many binary digits are used to represent the colour of each pixel

• How many binary digits are used to represent the image

Between two images, the one with the greater colour depth:

(Select all that apply.)

• Will be ‘sharper’, more detailed

• Will have more colours

• Will be larger in size, i.e. require more bits to be represented

For each of these scenarios below, which ones would use high-resolution images?

• Printing photographs on paper

• Keeping an archive of images on a storage device with limited capacity

• Selecting images to be used on a website; it’s important that the website be fast to load

• Using image editing software to manipulate images on a slow computer

• Using image editing software to perform professional-level image manipulation

Which piece of equipment would you need to use in order to capture sound from a digital device?

• Microphone

• Speaker

• Webcam

• Antenna