Physics GCSE
SI units
What SI units means in Physics GCSE, as defined for OCR.
Definition of SI units
Check what you remember
Read the wording for your board, then hide it and explain SI units in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The stated units are the metre, the metre per second and the second, and every quantity is converted to these before substituting.
Topics that use SI units
- Motion (OCR GCSE)
Related terms
- Acceleration
- Accurate reading of scales
- Appropriate apparatus selection
- Area as displacement
- average speed
- Change in velocity
- Choosing appropriate measuring instruments
- deceleration
Using SI units in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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