Physics for IGCSE & O level - Measurements And Units (Section 2)
1
If a ruler is used, which is crucial to ensure an accurate reading?
پاسخ دهید(C)
Placing the ruler next to the object
2
What instrument is used to measure mass?
3
When using a beam balance, what are you essentially comparing?
4
Which of these would be the most appropriate unit for measuring the distance between two cities?
5
What does the average density of a planet provide information about?
پاسخ دهید(C)
The planet's internal structure.
6
What happens to the mass of air in the bag if you squeeze the bag?
7
Which of the following are examples of units of volume?
8
How many millimeters are in a meter?
9
What is the effect of adding a stone to a measuring cylinder containing water?
10
What is a practical application of understanding density?
پاسخ دهید(A)
Predicting whether something will sink or float.
11
Which of these represents the correct formula to calculate volume?
12
Which statement about the density of Earth is correct?
پاسخ دهید(A)
Average density is 9520 kg/m³
13
What can be calculated if you know the mass and volume of an object?
14
Which factors are involved in calculating the volume of a rectangular object?
15
Which units can be used for measuring density?
16
What does the density of a liquid depend on?
17
Which of the following statements are correct concerning density?
18
Which term describes the amount of space an object takes up?
19
Which of the following statements regarding a simple beam balance are true?
20
Which of the following are base units?
21
What are the units for speed?
22
What is the purpose of the hot air rising in a hot air balloon?
23
What is the relationship between the mass of a planet and the orbit of any moon around it?
پاسخ دهید(B)
The mass of a planet affects the gravitational pull and the orbit of its moons.
24
What is the approximate density of water?
25
What is the formula for calculating the volume of a rectangular block?
26
What unit is typically used for measuring the length of a room?
27
How is a beam balance used?
28
What is the main purpose of comparing masses?
پاسخ دهید(B)
To determine if the object will sink or float
29
What will happen to an object if its density is less than the density of the liquid it is placed in?
30
What is a common unit for measuring density?
31
What does the text say about the relationship between the mass of the planet and its average density?
پاسخ دهید(B)
Density of the planet increases as the mass increases.
32
If the density of a solid object is 2.0 g/cm³, and you place it in a liquid with a density of 1.5 g/cm³, what will happen?
33
What is the term for the time it takes a pendulum to complete one full swing?
34
What is the relationship between a material's density and its ability to float or sink?
پاسخ دهید(D)
If the density is lower than the liquid, it floats.
35
What is the base unit of time?
36
What factors are necessary for calculating the volume of a rectangular block?
37
Which of the following statements are correct about density?
38
Which is the formula used to calculate the density of air in a bag?
39
If an object floats, what can you say about its density compared to water?
40
Which instrument is most often used for timing short intervals?
41
What unit is typically used for measuring the mass of a person?
42
What is the name of the device used to compare masses?
43
The process of determining the amount of space a solid occupies is called:
44
What should a student consider when making a claim about the period of the pendulum?
45
What is the formula for density?
46
What is an example of a derived unit?
47
What information is needed to calculate the density of a rectangular block?
48
Which of the following are correct regarding the core of the Earth?
پاسخ دهید(B)
The Earth must have a high-density core.
49
If an object sinks in a liquid, what does it mean about the object's density compared to the liquid's density?
پاسخ دهید(C)
It is greater than the liquid's density.
50
What type of liquid is a hydrometer designed to measure?
