Pressure & Pressure Differences in Fluids (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
📚Flashcards
Practise the cards
9 cards from this deck
ShowHide
Practise the cards
9 cards from this deck
What is the atmosphere?
What is the atmosphere?
A thin layer of air around Earth
What happens to atmosphere density as altitude increases?
What happens to atmosphere density as altitude increases?
Gets less dense
What causes atmospheric pressure?
What causes atmospheric pressure?
Air molecules colliding with the surface
What happens to atmospheric pressure as altitude increases?
What happens to atmospheric pressure as altitude increases?
It decreases
Why does atmospheric pressure decrease with altitude?
Why does atmospheric pressure decrease with altitude?
The atmosphere is less dense at higher altitudes
Why does less dense atmosphere mean less pressure?
Why does less dense atmosphere mean less pressure?
Fewer particles to collide with the surface
What happens to air particles above a surface as height increases?
What happens to air particles above a surface as height increases?
Fewer air particles on top of the surface
What happens to weight of air above a surface as altitude increases?
What happens to weight of air above a surface as altitude increases?
Less weight of air on top of the surface
How does less air weight affect pressure with altitude?
How does less air weight affect pressure with altitude?
Pressure decreases with altitude