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Physics for IGCSE & O level - Forces And Pressure (Section 7)

1
In a liquid, how does pressure change with depth?
Answer
(C)
Pressure increases with depth
2
What is the approximate value of 1 atmosphere of pressure in pascals?
Answer
(D)
101,325 Pa
3
Which of the following must be kept constant when using Boyle's law?
Answer
(B)
Temperature
4
What is the relationship between force, pressure and area?
Answer
(A)
Force = Pressure * Area
5
What is the pressure in a liquid independent of?
Answer
(C)
The surface area
6
What is the approximate value of atmospheric pressure in pascals (Pa)?
Answer
(D)
100,000 Pa
7
How does the temperature of a gas relate to its pressure when volume and the amount of gas are constant?
Answer
(B)
Temperature and pressure are directly proportional.
8
What are the factors that determine the pressure in a liquid?
Answer
A
B
9
What type of forces are discussed?
Answer
(D)
Turning
10
Which of the following is a real-world example demonstrating pressure?
Answer
(A)
A balloon inflating
11
Which of the following appears to be calculated?
Answer
(A)
The spring constant
12
Which topics are included in the introductory section?
Answer
A
B
C
13
What happens to the pressure exerted by a liquid at a particular depth if the density of the liquid is increased?
Answer
(B)
Pressure increases
14
What is the formula for pressure?
Answer
(A)
Force/Area
15
In a liquid, where is the pressure the same?
Answer
(C)
At the same depth
16
What describes the behavior of an elastic material?
Answer
(B)
It stretches and returns to its original shape.
17
What is the relationship between pressure and the area over which a force is applied?
Answer
(B)
Inversely proportional
18
What is the formula for calculating the pressure in a liquid at a certain depth?
Answer
(B)
Pressure = Density * Gravity * Height
19
What does an elastic material do?
Answer
(B)
Returns to its original shape
20
Which one of these terms are being used to describe something which turns?
Answer
(A)
Torque
21
What topics are introduced at the beginning?
Answer
A
B
C
22
What is the standard unit of force?
Answer
(B)
Newton (N)
23
Which of the following statements is true regarding pressure in a liquid?
Answer
(B)
Pressure is exerted equally in all directions.
24
What effect does increasing the temperature have on the pressure of a gas (assuming constant volume and amount of gas)?
Answer
(B)
Pressure increases.
25
What would you expect to see happening to the volume of the bubble as it rises through the water?
Answer
(C)
Increase
26
If the force increases, what happens to the pressure (assuming constant area)?
Answer
(C)
Pressure increases.
27
What happens to the volume of a bubble rising to the surface, assuming a constant temperature?
Answer
(C)
Volume increases
28
What is an example of a device that measures pressure?
Answer
(B)
Manometer
29
What type of effect is mentioned?
Answer
(B)
Turning Effect
30
If you increase the area over which a force is applied, what happens to the pressure?
Answer
(B)
Pressure decreases
31
If the temperature of a gas increases, and the volume stays constant, what happens to the pressure?
Answer
(B)
It increases.
32
In the formula for pressure due to a liquid (p = ρgh), what does the symbol 'ρ' represent?
Answer
(B)
Density
33
What is the formula for pressure?
Answer
(B)
Pressure = Force / Area
34
What is the unit of pressure?
Answer
(B)
N/m^2
35
What is the formula used to calculate pressure?
Answer
(C)
Pressure = Force / Area
36
Which term describes how a force affects an object's rotation?
Answer
(B)
Torque
37
Which factor determines pressure?
Answer
(C)
Force and area
38
What is the approximate depth of a liquid that gives you the same pressure as 1 atm?
Answer
(C)
100 meters
39
What are covered in relation to the subject of pressure?
Answer
A
B
40
Which of these are factors that can change the pressure of a gas?
Answer
A
B
C
41
If you increase the force applied over a certain area, what happens to the pressure?
Answer
(B)
The pressure increases.
42
What is the definition of pressure?
Answer
(C)
Force divided by area
43
What are discussed in regard to pressure?
Answer
A
B
44
What happens to a gas pressure if its volume is expanded?
Answer
(A)
Pressure decreases.
45
What unit of pressure is equivalent to Newtons per square meter (N/m²)?
Answer
(B)
Pascal (Pa)
46
What does the density of a liquid affect regarding pressure?
Answer
(B)
The rate at which the pressure increases with depth
47
Which of the following is a key characteristic of atmospheric pressure?
Answer
A
D
48
Which statement is true about the pressure in all directions in a liquid?
Answer
(A)
The pressure is the same in all directions at any depth.
49
What does the acronym 'atm' stand for in the context of pressure?
Answer
(A)
Atmosphere
50
The force exerted by a gas on the walls of its container is due to:
Answer
(B)
The collisions of the gas molecules with the container walls