Year 9

Year 9

# Binary Mosaic

## Slide deck

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## Lesson details

### Key learning points

1. In this lesson, we will create digital mosaics pixel by pixel, and experience how an image composed of individual coloured elements can correspond to a sequence of binary digits.

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

## Video

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## Worksheet

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## Exit quiz

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### 5 Questions

Q1.
Digital images are composed of individual elements, arranged in a rectangular grid. The elements of a digital image are called .............................................
Bits
Colour Depth
Correct answer: Pixels
Q2.
The number of pixels in a digital image is the image .......................................
Raster
Reflection
Correct answer: Resolution
Q3.
3. The (fixed) number of binary digits used to represent each pixel’s colour is the colour depth . How many colours are possible with a colour depth of 7 bits?
Correct answer: 128
24
8
Q4.
Images with a high colour depth and high resolution are great because ................................. (Select all the options that apply)
Correct answer: Increased ability to capture detail
Increased Processing time
Correct answer: Increased quality
Increased storage
Correct answer: Large number of bits representing various colours
Q5.
Digital images that are formed using a binary representation of each pixel’s colour are called bitmaps or raster images. True or False?
False
Correct answer: True