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Year 10 - Computing

Metadata

Representation of text, images and sound

Unit Summary

In this unit, pupils will discover how letters, images and sounds are represented with binary digits. They will also explore the factors that impact the quality of those representations and investigate the effects these quality choices have on file size.

Lesson Summary

You will learn to describe what metadata is and how it is used to provide data about images and sounds.

Key Notes

  • Metadata is data that describes other data.
  • Metadata provides extra information about the properties of an original artefact as textual data that can be searched.
  • Image and sound file metadata provides a range of information that can be used in a variety of ways.

Vocabulary To Learn

  • metadata: data used to describe other data

Common Mistakes To Avoid

  • Metadata is only used when a user needs to know when a file was made or changed.

3 Quick Questions (With Answers)

1. Describe the system or process from this lesson in clear steps.

Metadata is data that describes other data. Metadata provides extra information about the properties of an original artefact as textual data that can be searched.

2. Define this computing term and give one practical example. 'metadata'

data used to describe other data. Add one real device or system example to prove understanding.

3. Correct this common computing misconception.

Mistake: Metadata is only used when a user needs to know when a file was made or changed. Correction: Metadata can be used in a variety of ways. For example, software can be designed to make use of metadata for effective cataloguing and providing extra information about the properites of a file being used.

More Lessons In This Unit

Browse all guides in the Year 10 Computing guide library.