Pressure and Buoyancy - JSS2 Basic technology Past Questions and Answers - page 1
What is the definition of pressure?
Force per unit volume
Force per unit area
Weight per unit area
Mass per unit volume
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What is the SI unit of pressure?
Newton (N)
Joule (J)
Pascal (Pa)
Watt (W)
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Pressure is calculated using which formula?
P = F / V
P = A / F
P = F × A
P = F / A
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If the force applied on a surface increases while the area remains constant, what happens to the pressure?
It decreases
It remains the same
It increases
It depends on the material
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Which of the following effects can pressure have on objects?
Changing colour
Compression and expansion
Changing temperature
Altering electrical conductivity
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High pressure can cause materials to:
Expand and cool down
Compress and strengthen
Compress and stress
Expand and stress
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Archimedes' Principle is associated with which concept?
Thermal expansion
Buoyancy
Electrical resistance
Friction
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According to Archimedes' Principle, the buoyant force on an object is equal to:
The volume of the fluid displaced
The weight of the object
The weight of the fluid displaced
The density of the fluid
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An object will float in a fluid if:
It's density is greater than that of the fluid
It's density is equal to that of the fluid
It's density is less than that of the fluid
It is solid and the fluid is liquid
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Which device uses buoyancy to measure the density of liquids?
Thermometer
Barometer
Hydrometer
Manometer
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