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Quarter 4

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Question 1 of 37 0% read

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

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