Physics for IGCSE & O level - The Earth In Space (Section 7)
1
Which scientist developed the theory of electromagnetism?
Одговорити
(C)
James Clerk Maxwell
2
In which of the following situations could you benefit from eye protection?
Одговорити
A
B
C
D
3
What is the correct procedure to ensure that a scale reading is accurate?
Одговорити
(B)
Ensure the indicator is at eye level.
4
What is the definition of period of a pendulum?
Одговорити
(B)
The time it takes to complete one swing
5
Why is it important to take multiple readings in an experiment?
Одговорити
(B)
To find an average value
6
When designing a parachute, what is the correct thing to do?
Одговорити
(B)
Change the material and size
7
If air is trapped in a sealed cylinder at a pressure of 200kPa, 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?
Одговорити
(A)
66.7 kPa
8
Who first suggested that the Earth might behave like a 'bar magnet'?
Одговорити
(A)
William Gilbert
9
What does 10^10 mean?
Одговорити
(C)
10,000,000,000
10
What is the relationship between thermal energy and internal energy?
Одговорити
(B)
Thermal energy is a component of internal energy.
11
What did James Chadwick discover?
Одговорити
(C)
The neutron
12
A car is traveling to the right. Which of the following statements must be true?
Одговорити
(B)
X has double the resistance of Y.
13
What does the text describe as the tool used to measure angles?
Одговорити
(B)
Protractor
14
Who proposed the concept of photons?
Одговорити
(C)
Albert Einstein
15
What should be done to the power supply before making a circuit?
Одговорити
(C)
Switched off
16
What is one way to safely work with a gas flame?
Одговорити
(C)
Make sure there is a gauze on top before attempting to heat.
17
What safety measure should always be taken before starting any experiment involving electricity?
Одговорити
(C)
Switch off the power supply.
18
What is important to include in a scientific report?
Одговорити
(D)
All of the above
19
What are you supposed to do during a test?
Одговорити
A
B
C
D
20
Which of the following energy resources does NOT have the Sun as its main source of energy?
Одговорити
(A)
Geothermal
21
What is the main purpose of a shielding cage when working with high voltage?
Одговорити
(B)
To protect people from the electrical hazard
22
What does 'follow instructions carefully' help prevent?
Одговорити
(C)
Accidents
23
Which statement about resistance is correct?
Одговорити
(B)
X has double the resistance of Y.
24
What is one of the key pieces of evidence supporting the expansion of the universe?
Одговорити
(B)
The observation of redshift in the light from distant galaxies.
25
What is the current in the secondary coil? Assume that the transformer is 100% efficient.
Одговорити
(B)
1.0 A
26
Which of the following is a key consideration when choosing a scale for your graph?
Одговорити
(D)
Choosing a scale where each interval is easy to calculate
27
What happens to the apparent depth of an object in water?
Одговорити
(C)
Looks shallower than the real depth.
28
Which color shift indicates an object moving away from the observer?
Одговорити
(B)
Redshift
29
What is the name of the line drawn when we find new values from the graph?
Одговорити
(C)
Extrapolation
30
When working in the lab, which action is a safe practice?
Одговорити
(A)
Wearing a lab coat.
31
What are the units for the length of the wire?
Одговорити
A
B
C
32
When you have a flammable liquid, what are important safety considerations?
Одговорити
A
B
D
33
What does the letter 'V' stand for in the context of a circuit?
Одговорити
(A)
Voltage
34
What is the primary means of identifying the expansion of the universe?
Одговорити
(C)
Detecting the redshift of light from distant galaxies.
35
What is the correct way to measure the boiling point of water?
Одговорити
(D)
Keep the thermometer in the water while taking the reading
36
What must be included when labeling the axes of a graph?
Одговорити
(A)
The units of measurement
37
If you are looking at an experiment about the length of a wire, the independent variable will be?
Одговорити
(C)
Length of the wire.
38
What is the formula that relates voltage, current, and resistance?
Одговорити
(A)
V = I * R
39
A car with a mass of 1000 kg accelerates at 1 m/s² along a straight, flat road. What is the resultant force acting on the car?
Одговорити
(C)
1000 N
40
The student measures the time for the pendulum to swing from A to C. Describe how the student determines this time as accurately as possible.
Одговорити
A
B
C
41
What is the total resistance of the three resistors arranged in this combination?
Одговорити
(C)
C = 0
42
Which sections appears to focus on planets?
Одговорити
B
C
43
What is the approximate age of the universe, according to the Big Bang theory?
Одговорити
(C)
13.8 billion years
44
What is the name of the phenomenon in which the wavelength of light is increased (shifted towards the red end of the spectrum) when the source is moving away from the observer?
Одговорити
(B)
Red shift
45
What should you do if someone has been electrocuted?
Одговорити
(B)
Immediately turn off the power supply
46
What is the acceleration of the motorcycle during the first 10 seconds?
Одговорити
(C)
1 m/s²
47
Which section's title includes the word 'orbit'?
Одговорити
(D)
11.4
48
Which of the following is an example of measuring time?
Одговорити
(A)
A stopwatch
49
Which instrument is useful for drawing?
Одговорити
(C)
Compass
50
Which of the following is found in the context of the Solar System?
