Physics GCSE
compression by the air above
What compression by the air above means in Physics GCSE, as defined for AQA.
Definition of compression by the air above
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Reference: AQA
Air is a gas and can be compressed, so the weight of all the air above squeezes the air at the bottom into a smaller volume.
Topics that use compression by the air above
- Atmospheric pressure (AQA GCSE)
Related terms
- altitude
- average density
- collision frequency
- column of air
- comparing heights
- extra layer of air
- force per unit area
- particle spacing
Using compression by the air above in the exam
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