There is a term for the number of individual elements in an image. What is it?

What is the bit depth of this image?

If an image uses 'RGB colour', then how many bits are used to represent the colour of each pixel?

The resolution of this image is 600⨉400. This means that:

You check the file "Properties" (or "Get Info") of an image and see that its size is 800kB (kilobytes). Select an equivalent size from the list below:

You calculate the representation size that an image is supposed to have - 24MB. You find that the actual size is much smaller than you expected ~ 3.2MB. What one word explains this?

This image of a flower has a resolution of 2,000⨉2,000 and its colour depth is 10 bits. What is the resolution of the image in megapixels?

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

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

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

Between two images, the one with the greater resolution:

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

Select the scenarios below where we might choose to use images with a low resolution.

In this image, the colour of each pixel is either black or white. How many binary digits are required to represent the colour of each pixel?

The BBC Micro computer (1981) was capable of displaying images at a resolution of 600⨉256, using 3 bits to represent the colour of each pixel. How many different colours was it capable of displaying?

The Commodore 64 computer (1982) had a resolution of 320⨉200, using 4 bits to represent the colour of each pixel. 

How many different colours was it capable of displaying?

The BBC Micro computer (1981) was capable of displaying images at a resolution of 600⨉256, using 3 bits to represent the colour of each pixel. How many bits were required to represent an image displayed on the BBC Micro?

The Commodore 64 computer (1982) had a resolution of 320⨉200, using 4 bits to represent the colour of each pixel. 

How many bits were required to represent an image displayed on the
Commodore 64?

Sound could be described as:

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

Which piece of equipment from the below would you need to use in order to record sound into a digital device?

What is the role of the microphone?

What is the role of the speakers?

Select the definition that you find most appropriate for the sampling rate of digitised sound:

Select the definition that you find most appropriate for the sample size of digitised sound:

Between two pieces of digitised sound, all other things being equal, the one with the greater sampling rate:

Between two pieces of digitised sound, all other things being equal, the one with the greater sample size:

You go out into the woods to record sounds of birds. You set the sampling rate on your digital recorder to 40,000 samples per second and the sample size to 16 bits per sample. You are lucky enough to come across a nightingale, and you capture a stereo recording of its singing for 90 seconds. How many binary digits are required to represent that sound? (use a calculator if you need to)

What is 80,000,000 bits in bytes?

What is 80,000,000 bytes in kilobytes?

A friend tells you that an audio CD can store up to 80 minutes of sound. You are reluctant to believe this, as you know that you can copy hundreds of your MP3 files onto a CD, and that would definitely be more than 80 minutes of sound. You are both right. Use one single word to explain this.