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Quiz: Images as Pixels - Representing Pictures in Binary
OCR GCSE J277 Computer Science specification
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Welcome! You've already learned about binary and how it is used to store data like text, numbers, and sound. Today, let's test your knowledge about how computers represent images as pixels using binary!
What is a pixel?
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Which of the following are true about pixels? (Select all that apply)
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The colour of a pixel is determined by its {{blank0}} value, which is stored in {{blank1}}.
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Match the items on the left with their correct pairs on the right
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Match the items on the left with their correct pairs on the right
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What happens if you increase the colour depth of an image?
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What is metadata in the context of an image file?
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Match the items on the left with their correct pairs on the right
An image is made up of {{blank0}}, which are tiny squares of colour arranged in a {{blank1}}.
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If an image has a resolution of 200 × 150, how many pixels does it contain?
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What does an increase in resolution do to an image file?
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