1.
Which device is used to detect the direction of magnetic field?
A
Ammeter
B
Voltmeter
C
Compass
D
Thermometer
2.
Ferromagnetic materials are:
A
Strongly attracted by magnets
B
Weakly attracted
C
Weakly repelled
D
Not affected
3.
Which sub-field of physics studies heat?
A
Electronics
B
Thermodynamics
C
Astrophysics
D
Geophysics
4.
Unlike magnetic poles will:
A
Repel each other
B
Have no effect
C
Attract each other
D
Destroy each other
5.
Which of the following is diamagnetic?
A
Iron
B
Nickel
C
Copper
D
Cobalt
6.
Magnetic field lines never:
A
Intersect each other
B
Form closed loops
C
Exist outside magnet
D
Exist inside magnet
7.
Magnetic shielding is used to:
A
Increase magnetic field
B
Reduce unwanted magnetic fields
C
Create electricity
D
Store data
8.
Which material is commonly used for magnetic shielding?
A
Aluminum
B
Plastic
C
Soft iron
D
Glass
9.
A hypothesis is usually based on ____.
A
Guesswork only
B
Observations
C
Opinions
D
Beliefs
10.
Which one converts scientific ideas into practical devices?
A
Science
B
Technology
C
Philosophy
D
Literature
11.
Which is more general?
A
Hypothesis
B
Theory
C
Observation
D
Experiment
12.
Which sub-field deals with electric charges?
A
Mechanics
B
Electromagnetism
C
Thermodynamics
D
Optics
13.
Nuclear physics studies ____.
A
Electrons
B
Atomic nucleus
C
Sound
D
Light only
14.
Falsifiability means a scientific statement must be ____.
A
Popular
B
Testable
C
Complex
D
Permanent
15.
Scientific laws are valid as long as they are ____.
A
Popular
B
Not challenged
C
Supported by experiments
D
Old
16.
Physics helps us understand the universe by using ____.
A
Myths
B
Experiments and mathematics
C
Opinions
D
Traditions
17.
Which material is suitable for making electromagnets?
A
Steel
B
Aluminum
C
Soft iron
D
Copper
18.
Which are the two ends of a magnet called?
A
Electric poles
B
Positive and negative ends
C
Magnetic poles
D
Charged ends
19.
The study of sound comes under which branch?
A
Optics
B
Acoustics
C
Mechanics
D
Electromagnetism
20.
Which of the following is a use of permanent magnets?
A
Electric bell
B
Transformer
C
Loudspeaker
D
Electromagnetic crane
21.
Which is an example of technology?
A
Newton’s laws
B
Mobile phone
C
Theory of motion
D
Scientific method
22.
Which property of a magnet causes it to attract iron?
A
Electric charge
B
Magnetic field
C
Gravity
D
Friction
23.
The strength of an electromagnet can be increased by:
A
Reducing current
B
Increasing number of turns
C
Using plastic core
D
Reducing turns
24.
Physics contributes most directly to which field?
A
Art
B
Engineering
C
History
D
Geography
25.
What is a scientific theory?
A
A guess
B
An explanation supported by evidence
C
A rule without proof
D
A belief
26.
Why is falsifiability important in science?
A
It makes science complex
B
It allows testing of ideas
C
It proves beliefs
D
It avoids experiments
27.
Science is best described as a ____ process.
A
Individual
B
Random
C
Collaborative
D
Secret
28.
The closeness of magnetic field lines indicates:
A
Direction of field
B
Strength of field
C
Type of magnet
D
Mass of magnet
29.
Which of the following is not science?
A
Physics
B
Chemistry
C
Technology
D
Biology
30.
Magnetic field lines enter the magnet at:
A
North pole
B
South pole
C
Center
D
Any point
31.
Which magnet loses its magnetism easily?
A
Permanent magnet
B
Temporary magnet
C
Bar magnet
D
Earth magnet
32.
Iron filings are used to:
A
Measure magnetic field
B
Plot magnetic field lines
C
Increase magnetism
D
Destroy magnet
33.
The magnetic field inside a magnet is directed from:
A
North to South
B
South to North
C
East to West
D
West to East
34.
Engineering differs from science because it focuses on ____.
A
Discovering facts
B
Applying knowledge
C
Forming laws
D
Making hypotheses
35.
A scientific law describes ____.
A
Why something happens
B
How something happens
C
Who discovered it
D
Where it is used
36.
Which application uses magnetism in data storage?
A
LCD screen
B
Hard disk
C
Calculator
D
Solar panel
37.
Scientific knowledge grows mainly through ____.
A
Arguments
B
Experiments and discussion
C
Opinions
D
Traditions