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SingaporeCombined ScienceQuick questions
Physics: Measurement, Forces and Energy
Quick questions on Physical quantities and measurement: N(A)-Level Combined Science Physics
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are common prefixes?Show answer
Prefixes let us write very large or very small values neatly:
What is choosing the right instrument?Show answer
The instrument must match the size of what you are measuring:
What is reading a scale correctly?Show answer
To read any scale accurately, look at it straight on, with your eye level with the marking. Looking from an angle gives a parallax error. With a measuring cylinder, read the bottom of the curved liquid surface, called the meniscus.
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