Physics for IGCSE & O level - The Earth In Space (Section 2)
1
What is the total resistance of the three resistors?
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(C)
C = 0
2
What should you do if a flammable liquid spills over a Bunsen burner?
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(D)
Extinguish the fire immediately
3
What is used to measure angles?
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(B)
Protractor
4
Which type of radiation source should be handled with extra care?
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(D)
All of the above
5
Which of the following would you use to measure a volume?
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(A)
Measuring cylinder
6
What is the primary focus of "Working Safely" section?
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(C)
Preventing injuries and accidents
7
Which of the following are crucial for making a good scientific experiment?
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A
B
C
8
In an experiment, what is the dependent variable?
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(B)
The variable you measure
9
What is the purpose of a line of best fit in a graph?
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(B)
To show the general trend of the data
10
What type of support is recommended when using a beaker with a Bunsen burner?
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(A)
A tripod with wire gauze
11
What is the average speed of the drop of water?
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(C)
1.2 m/s
12
Which tool is used for measuring the length of an object?
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(B)
Ruler
13
Which of the following energy resources does NOT have the Sun as its main source of energy?
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(A)
geothermal
14
A car of mass 1000kg accelerates at 1 m/s² along a straight, flat road. What is the resultant force acting on the car?
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(C)
1000 N
15
If air is trapped in a sealed cylinder at a pressure of 200 kPa, and the piston is pulled out slowly so that the air expands to three times its volume. What is the new pressure of the air?
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(C)
600 kPa
16
Which statement best explains why copper is a better thermal conductor than glass?
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(D)
In copper, there are free electrons that transfer the thermal energy.
17
What is the main concept of 'mathematics for physics'?
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(A)
Understanding inverse proportions
18
What is the size of the force that the man exerts on the cupboard?
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(B)
50 N
19
What must be included when writing a scientific report?
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A
B
C
D
20
What is the danger of touching a hot plate or a beaker after it is heated?
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(C)
You may get burned
21
Who established the link between work and heat?
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(A)
James Joule
22
According to the text, what does the redshift of light from distant galaxies suggest about the universe?
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(C)
The universe is expanding.
23
In a lab, when should you wear eye protection?
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(B)
During all experiments
24
What kind of data is used when you are finding values beyond the measured points called?
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(B)
Extrapolation
25
Which of the following is the best definition of "internal energy"?
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(B)
The sum of the kinetic and potential energies of all the particles
26
Which word affects the points of the compass?
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(D)
None of them
27
Why is it important to ensure accurate measurement
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(D)
All of the above
28
What is the first step when conducting an experiment?
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(C)
Following the instructions carefully
29
Which term relates to the change in frequency of waves due to relative motion?
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(B)
The Doppler Effect
30
Which of the following is a form of fraction?
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(D)
All of the above
31
What is the formula for calculating resistance?
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(B)
Resistance = Voltage / Current
32
What are key things to consider when designing a parachute?
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A
B
D
33
What type of radiation did Edwin Hubble use to show that galaxies were moving away?
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(B)
Visible light
34
When is it acceptable to eat or drink in the lab?
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(C)
Never
35
What does the word 'extrapolation' mean?
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(B)
Finding values beyond the measured data
36
When measuring the temperature of a liquid, what is the correct technique?
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(C)
Keep the thermometer in the liquid while reading it.
37
What type of graph is typically used to show the relationship between two variables?
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(C)
Line graph
38
Which of the following is NOT a concept related to the Big Bang theory?
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(A)
Inflation
39
Two wires, X and Y, are made of the same material and are at the same temperature. Which statement explains that resistance is correct?
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(B)
X has double the resistance of Y.
40
What should be noted on a drawing of the line?
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(D)
All of the above
41
What should you do if you are working with corrosive chemicals?
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(B)
Use gloves and eye protection.
42
What do scientists describe that makes the Universe is expanding?
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(B)
Galaxies
43
Which scientific principle helps explain why the light from distant galaxies is redshifted?
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(A)
The Doppler effect
44
What is the primary characteristic of the light emitted by galaxies that are moving away from us?
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(C)
Redshift
45
Which part of the electromagnetic spectrum is primarily used to detect the Cosmic Microwave Background Radiation (CMBR)?
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(C)
Radio waves
46
What is the average orbital speed of the Earth?
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(B)
1.3 x 10^4 m/s
47
What is the average orbital speed of the Earth?
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(B)
1.3 x 10^4 m/s
48
Which is the unit of Voltage?
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(C)
Volts
49
Which statement describes the image formed by the convex lens?
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(D)
The image is virtual and between the lens and the eye
50
What unit is best to use when describing a speed of 10 m/s?
