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