Physics A-Level
Motion
What Motion means in Physics A-Level, as defined for OCR.
Definition of Motion
Check what you remember
Read the wording for your board, then hide it and explain Motion in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
How the atoms or molecules move, vibrating about fixed mean positions in solids, sliding past one another in liquids and moving rapidly and randomly in gases.
Topics that use Motion
- Solid, liquid and gas (OCR A-Level)
Related terms
- Absolute zero
- Brownian motion
- Change of phase
- Constant temperature during phase change
- Energy transfer in melting and boiling
- Experimental observation through a microscope
- Explaining shape, volume and pressure with the model
- Internal energy
Using Motion 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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