Pressure and Buoyancy - JSS2 Basic technology Past Questions and Answers - page 1
1
What is the definition of pressure?
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A
Force per unit volume
B
Force per unit area
C
Weight per unit area
D
Mass per unit volume
2
What is the SI unit of pressure?
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A
Newton (N)
B
Joule (J)
C
Pascal (Pa)
D
Watt (W)
3
Pressure is calculated using which formula?
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A
P = F / V
B
P = A / F
C
P = F × A
D
P = F / A
4
If the force applied on a surface increases while the area remains constant, what happens to the pressure?
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A
It decreases
B
It remains the same
C
It increases
D
It depends on the material
5
Which of the following effects can pressure have on objects?
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A
Changing colour
B
Compression and expansion
C
Changing temperature
D
Altering electrical conductivity
6
High pressure can cause materials to:
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A
Expand and cool down
B
Compress and strengthen
C
Compress and stress
D
Expand and stress
7
Archimedes' Principle is associated with which concept?
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A
Thermal expansion
B
Buoyancy
C
Electrical resistance
D
Friction
8
According to Archimedes' Principle, the buoyant force on an object is equal to:
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A
The volume of the fluid displaced
B
The weight of the object
C
The weight of the fluid displaced
D
The density of the fluid
9
An object will float in a fluid if:
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A
It's density is greater than that of the fluid
B
It's density is equal to that of the fluid
C
It's density is less than that of the fluid
D
It is solid and the fluid is liquid
10
Which device uses buoyancy to measure the density of liquids?
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A
Thermometer
B
Barometer
C
Hydrometer
D
Manometer
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