Year 8 Homework 3

Name:

Class:

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

• Pixels

• Bits

• Bytes

• Colors

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

• Resolution

• Color depth

• Bit rate

• Frame rate

What is the colour depth of this image?

• A.      7 colours

• A.      8 colours

• A.      3 bits

• A.      24 bits

How many binary digits does it take 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 600x400. This means that:

• 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.

You check the file properties of the image and see that its size is 800kB (kilobytes). Select one or more equivalent sizes from the list below:

• 800 thousand bytes

• 800 million bytes

• 800kb (kilobits)

• 800 billion bytes

• 100kb (kilobits)

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.