Year 7 HT3 Images I

What is a pixel?

• A single dot of colour in an image
• A type of computer program
• A unit of memory storage
• A camera setting

What does resolution mean in an image?

• The number of pixels in an image
• The speed of the computer
• The size of the screen
• The brightness of the display

If an image is 100 pixels wide and 200 pixels tall, how many pixels does it have?

• 20000
• 2000
• 1000
• 200000

What does a higher resolution mean?

• More pixels and more detail
• Fewer colors in the image
• A smaller image size
• A faster computer

How are colors represented in a computer?

• Using binary numbers
• Using letters
• Using shapes
• Using audio signals

How many colors can a single pixel display if it uses 8 bits?

• 256
• 128
• 64
• 512

What is the purpose of using binary numbers in images?

• To store and process color information
• To make images larger
• To create random shapes
• To reduce memory usage

What is the bit depth of an image?

• The number of bits used per pixel
• The size of the screen
• The brightness of an image
• The number of colors in the world

If an image has 4 bits per pixel, how many colors can it represent?

• 16
• 8
• 4
• 32

Why do images with more colors require more storage?

• More bits are needed to represent the colors
• They are saved in larger file formats
• They make the computer slower
• They use fewer pixels