Pressure & Pressure Differences in Fluids (AQA GCSE Physics): Flashcards
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Practise the cards
8 cards from this deck
The atmosphere
The atmosphere
Thin layer of air around Earth
Atmosphere density at higher altitudes
Atmosphere density at higher altitudes
Less dense
What creates atmospheric pressure
What creates atmospheric pressure
Air molecules colliding with a surface
Atmospheric pressure vs altitude
Atmospheric pressure vs altitude
Decreases with increasing altitude
Why pressure ↓ with altitude (density reason)
Why pressure ↓ with altitude (density reason)
Atmosphere less dense, so fewer particles collide with surface
Number of air particles above at higher altitude
Number of air particles above at higher altitude
Fewer particles on top of surface
Weight of air above at higher altitude
Weight of air above at higher altitude
Less weight pressing down on surface
Weight contribution to pressure vs altitude
Weight contribution to pressure vs altitude
Also decreases with altitude