AQA GCSE Physics Atmospheric Pressure

Resources

The following resources will be helpful to answer these questions. 

1. The specification is very helpful indeed – From Page 48. https://filestore.aqa.org.uk/resources/physics/specifications/AQA-8463-SP-2016.PDF
2. The BBC Bitesize website is also very good – https://www.bbc.co.uk/bitesize/guides/z93dxfr/revision/1

Questions

1. Write a sentence to explain what the atmosphere is? 
2. What happens to the density of the atmosphere with increasing altitude? 
3. How do air molecules cause atmospheric pressure? 
4. Copy the following paragraph filling in the blanks. The specification will help you. 

The number of air molecules (and so the _________ of air) above a surface __________ as the height of the surface above________ level increases. So as ___________ increases there is always _____________r above a surface than there is at a lower height. So atmospheric pressure decreases with an increase in __________.