Graphics

Question 1

What are Bitmap graphics?

Answer 1

• Made up of pixels where each pixel has a position
• Large images need more dots to maintain the quality
• Sometimes known as raster images
• Used for photographs and images with shading

Question 2

What are Vector graphics?

Answer 2

• Consist of equations

- Components are also described by length, thickness and colour

Question 3

What are the advantages of vector graphics over bit mapped graphics

Answer 3

• Vector drawings can be enlarged to any size without any loss in quality
• Vector graphics are ideal for company logos as they can be greatly enlarged
• Files are smaller that bitmaps taking up less storage space
• Load faster

Question 4

What is a Pixel?

Answer 4

Is a dot of colour or picture element of a graphic that is a particular colour

Question 5

What is a resolution measured in?

Answer 5

Pixels

Question 6

What is the resolution of an image?

Answer 6

How many pixels per square inch (PPI)

Question 7

The more pixels per square inch the…

Answer 7

greater the density of dots so the higher the quality of the picture

Question 8

What is the resolution of printers measured in?

Answer 8

Dots per Inch (DPI)

Question 9

How do you work out the number of megapixels?

Answer 9

Vertical and Horizontal multiple then divided by one million

Question 10

Digital cameras memories are measure in…

Answer 10

Gigabytes

Question 11

What is one gigabyte?

Answer 11

1024 x 1024 x 1024

Question 12

What are images made up of?

Answer 12

Layers