Nature of Science

Physics, SSC-Punjab Class 9. This chapter is split into 31 topics and has 730 practice questions. The topics covered are listed below, followed by 10 free sample questions from the chapter.

Topics in this chapter

1. Innovation through interdisciplinary approaches 22 questions
2. Scope of physics: relativity, quantum mechanics and early technology 22 questions
3. Branches of physics: nuclear, particle, astronomy, cosmology and solid state 27 questions
4. Branches of physics: mechanics, heat, acoustics and optics 26 questions
5. Flow chart of the scientific method 25 questions
6. Prediction 24 questions
7. Hypothesis 23 questions
8. Why interdisciplinary research is needed 23 questions
9. Learning outcomes review: nature of science 24 questions
10. Albert Einstein and the 20th century 20 questions
11. Observation 22 questions
12. Theory 24 questions
13. Science: meaning and natural philosophy 24 questions
14. Identifying the branch of physics from its field of study 26 questions
15. Engineering and examples of engineers 24 questions
16. Rapid sharing of knowledge and collaborative research 21 questions
17. Branches of physics: electromagnetism, quantum and relativistic mechanics 23 questions
18. Technology: scientific base and examples 24 questions
19. Law 24 questions
20. Interdisciplinary nature of physics 24 questions
21. Experiment 25 questions
22. Worked example of the scientific method: light and shadows 24 questions
23. Hypothesis, theory and law distinguished 24 questions
24. Physics: the fundamental science 22 questions
25. Space and time in physics 23 questions
26. Falsifiability 24 questions
27. Science, technology and engineering differentiated 22 questions
28. The scientific method: overview and steps 24 questions
29. Astrophysics, geophysics, climate and computation physics 23 questions
30. Biophysics and medical physics 22 questions
31. Exercise review: multiple choice and short questions 25 questions

Sample questions: Nature of Science

10 sample questions with the correct answer and an explanation. Try to answer each one before reading the explanation.

Q1. Which branch of physics is defined as the thermal energy possessed by materials and its use when it flows from one body to another?

• A. Optics
• B. Heat and thermodynamics(correct answer)
• C. Solid State Physics
• D. Mechanics

Answer: B.Heat and thermodynamics is the branch of physics that deals with the thermal energy possessed by materials and its use when it flows from one body to another.

Q2. What does the branch of physics called Heat and thermodynamics study?

• A. the thermal energy possessed by materials and its use when it flows from one body to another(correct answer)
• B. the large structure and evolution of the universe
• C. the study of motion and the physical effects which influence motion
• D. the properties of the nuclei of atoms

Answer: A.The book describes Heat and thermodynamics as the study of the thermal energy possessed by materials and its use when it flows from one body to another.

Q3. An engineer studies how thermal energy flowing from a hot body to a cold body can drive an engine. Which branch of physics is this?

• A. Quantum Mechanics
• B. Electromagnetism
• C. Astronomy
• D. Heat and thermodynamics(correct answer)

Answer: D.This is an example from the branch Heat and thermodynamics: the thermal energy possessed by materials and its use when it flows from one body to another.

Q4. Which branch of physics is defined as electromagnetic phenomena and the mutual relationship between electric current and magnetic field?

• A. Electromagnetism(correct answer)
• B. Particle Physics
• C. Optics
• D. Nuclear Physics

Answer: A.Electromagnetism is the branch of physics that deals with electromagnetic phenomena and the mutual relationship between electric current and magnetic field.

Q5. Which branch of physics is defined as how space and time are not absolute quantities but are related to the observer, and how they are influenced by gravity and speed?

• A. Relativistic Mechanics(correct answer)
• B. Acoustics
• C. Mechanics
• D. Quantum Mechanics

Answer: A.Relativistic Mechanics is the branch of physics that deals with how space and time are not absolute quantities but are related to the observer, and how they are influenced by gravity and speed.

Q6. What does the branch of physics called Electromagnetism study?

• A. the thermal energy possessed by materials and its use when it flows from one body to another
• B. the physical aspects of visible light
• C. how space and time are not absolute quantities but are related to the observer, and how they are influenced by gravity and speed
• D. electromagnetic phenomena and the mutual relationship between electric current and magnetic field(correct answer)

Answer: D.The book describes Electromagnetism as the study of electromagnetic phenomena and the mutual relationship between electric current and magnetic field.

Q7. What does the branch of physics called Relativistic Mechanics study?

• A. the properties of the nuclei of atoms
• B. electromagnetic phenomena and the mutual relationship between electric current and magnetic field
• C. some specific properties of matter in solid form
• D. how space and time are not absolute quantities but are related to the observer, and how they are influenced by gravity and speed(correct answer)

Answer: D.The book describes Relativistic Mechanics as the study of how space and time are not absolute quantities but are related to the observer, and how they are influenced by gravity and speed.

Q8. A student studies how a current is produced when a coil is rotated in a magnetic field. Which branch of physics is this?

• A. Electromagnetism(correct answer)
• B. Optics
• C. Relativistic Mechanics
• D. Mechanics

Answer: A.This is an example from the branch Electromagnetism: electromagnetic phenomena and the mutual relationship between electric current and magnetic field.

Q9. A physicist studies how space and time are influenced by gravity and speed. Which branch of physics is this?

• A. Solid State Physics
• B. Quantum Mechanics
• C. Relativistic Mechanics(correct answer)
• D. Optics

Answer: C.This is an example from the branch Relativistic Mechanics: how space and time are not absolute quantities but are related to the observer, and how they are influenced by gravity and speed.

Q10. How many branches of physics are listed in Section 9.2?

• A. Six
• B. Fifteen
• C. Twelve(correct answer)
• D. Ten

Answer: C.Mechanics, heat and thermodynamics, acoustics, optics, electromagnetism, quantum mechanics, relativistic mechanics, nuclear physics, particle physics, astronomy, cosmology and solid state physics.