KS3 HL1.8 -Audio vidual formats and compresion

How are images saved electronically represented?

• By using hexadecimal codes

• By using binary codes

• By using decimal codes

• By using octal codes

What does changing the colour or brightness of each pixel generate?

• Metadata

• Resolution

• Detail

• Compression

How many colours can a 2-bit image represent?

• 2

• 4

• 8

• 16

What is the number of bits per pixel in a 4-bit image?

• 2

• 4

• 8

• 16

What does increasing the colour depth or resolution of an image improve?

• File size only

• Visual quality only

• Both visual quality and file size

• Neither visual quality nor file size

What is the term for the number of bits per pixel?

• Resolution

• Metadata

• Colour depth

• Compression

What determines the detail displayed in an image?

• The number of pixels used

• The file format

• The compression technique

• The metadata

What is the effect of increasing the number of pixels used to create an image?

• Decreases the file size

• Increases the detail displayed

• Reduces the colour depth

• Changes the file format

What is the process of converting sound into a digital file and storing it as binary called?

• Encoding

• Sampling

• Compressing

• Streaming

What does the sample rate measure in an audio clip?

• The number of bits used to encode the sample

• The number of samples taken each second

• The duration of the audio clip

• The quality of the sound file