Physics for IGCSE & O level - Measurements And Units (Section 1)

1
Which is a unit of volume?
Svar
(C)
liter
2
What is weight measured in?
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(C)
Newtons
3
What is a graduated cylinder used for?
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(B)
Measuring volume of liquids
4
Which of the following is a correct unit of density?
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(A)
g/cm³
5
If a crown has a density less than the density of gold, what can be inferred?
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(C)
The crown is a mixture.
6
Which of the following is NOT a base SI unit?
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(C)
Liter
7
What type of error is reduced if the measurement is taken at eye level?
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(D)
Human error due to parallax
8
Which of the following substances will float in water?
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(C)
Kerosene
9
What is the main function of a hydrometer?
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(C)
To measure the density of a liquid
10
In which units is the volume of a rectangular block calculated if length, width and height are given in cm?
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(C)
cm³
11
If you squeeze air in a plastic bag, how does its density change?
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(C)
It increases.
12
What is the mass of an object, measured in force units, called?
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(A)
Weight
13
Which of the following is NOT a unit of time?
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(D)
gram
14
Which is equivalent to 1000 meters?
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(C)
1 km
15
What is the name of the force that pulls objects downwards?
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(B)
Gravity
16
Which prefix means 'one thousand'?
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(A)
kilo
17
Which material will float in water?
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(D)
Kerosene
18
Which of the following best explains why a hot air balloon rises?
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(B)
Hot air is less dense than cold air.
19
In the context of Archimedes and the crown, what was the King suspicious of?
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(A)
The goldsmith.
20
Which of these represents the relationship between mass, density, and volume?
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(C)
Density = Mass / Volume
21
What is the meaning of 'density'?
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(A)
Mass/Volume
22
If a plastic bag filled with air has a volume of 0.008 m³ and then is squeezed, what will happen to its density?
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(B)
It will increase.
23
Which of the following will happen if a material has a density less than that of a liquid?
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(C)
It will float
24
What is the name of the force, measured in Newtons, that pulls an object down?
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(C)
Weight
25
Which of the following measurements is a measure of weight?
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(B)
Newtons
26
Which of the following statements about the density of Earth and Jupiter is correct?
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A
B
C
27
What is a common unit for time?
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(C)
second
28
Which of the following is the formula for density?
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(B)
Density = mass/volume
29
What information is needed to calculate the density of the air in a plastic bag?
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A
B
30
Which of the following is used to measure the density of a liquid?
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(B)
Hydrometer
31
If you have a rectangular block with length 5 cm, width 2 cm, and height 3 cm, calculate its volume.
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(C)
30 cm³
32
What is likely the material of a high-density core of a planet?
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(C)
Iron
33
What happens to the water level when a solid object is placed in a measuring cylinder?
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(C)
It increases.
34
Which of the following are SI units?
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A
B
D
35
What is the primary function of a beam balance?
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(B)
Comparing weights.
36
Which of the following statements is correct regarding Archimedes' discovery?
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(C)
He discovered the density of the crown.
37
What can we conclude if the density of an object is less than the density of the liquid it is placed in?
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(B)
The object will float.
38
Which of the following is a derived unit?
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(D)
liter
39
What instrument is used to measure the volume of a liquid?
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(B)
Measuring cylinder
40
Which statement is true?
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(D)
A hot-air balloon will rise upwards because hot air is less dense than cold air.
41
Which of the following are SI units?
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A
B
C
42
What is the name of the Greek mathematician known for his work on density?
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(A)
Archimedes
43
What instrument is used to measure the density of a liquid?
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(D)
A hydrometer
44
What is the unit of measurement for the period of a pendulum?
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(C)
Seconds
45
What can be used to measure the density of a liquid?
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(C)
A hydrometer
46
How is the volume of an irregular solid determined?
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(B)
By displacement
47
Which of the following can be used to measure length?
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A
B
48
What does the prefix 'centi' mean?
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(C)
1/100
49
Which two quantities are needed to calculate density?
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(A)
Mass and Volume
50
When measuring length, what should be aligned?
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(A)
The end of the ruler with the end of the object