Pressure in a Liquid (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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Condition for object to float in water
Condition for object to float in water
Its weight < weight of water displaced
Water displaced by 1000kg boat to float
Water displaced by 1000kg boat to float
1000kg of water
Two factors affecting pressure in liquid
Two factors affecting pressure in liquid
Depth and density
Buoyancy force definition
Buoyancy force definition
Upward force counteracting weight of floating object
Buoyancy force equals
Buoyancy force equals
Weight of fluid displaced by object
Formula for pressure in liquid (symbols)
Formula for pressure in liquid (symbols)
Units of in
Units of in
Pascals (Pa)
Units of in
Units of in
Metres (m)
Units of in
Units of in
kg/m³
Typical value of used
Typical value of used
10 N/kg
Upthrust definition
Upthrust definition
Resultant upward force on submerged object
Cause of upthrust
Cause of upthrust
Greater pressure on bottom surface than top
Atmosphere density change with altitude
Atmosphere density change with altitude
Gets less dense
Why atmospheric pressure decreases with altitude
Why atmospheric pressure decreases with altitude
Fewer air molecules above, smaller weight