Q1. The rate of doing work is called:
Power is defined as the rate at which work is performed or energy is transferred.
Class 9 Physics Chapter 9: Nature of Science MCQs With Explanations
Practice Class 9 Physics Chapter 9: Nature of Science MCQs with explanations for Pakistani board exams. Includes solved objective questions, answer checking, chapter revision guidance and next chapter suggestions.
50 MCQs
Chapter 9: Nature of Science Objective Preparation
Use this page for direct chapter practice, answer checking and explanation review. It is available through the clean URL shown in the browser, so students can bookmark and share this exact chapter.
50Total MCQs
44With explanations
8Topics represented
Topics found: Power Definition, Energy Definition, Vector Quantities, Meteorology Definition, Metric Conversion, Metric Prefixes, SI Base Units Count, SI Base Units
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Nature of Science MCQs With Explanations
Q2. The ability to do work is called:
Energy is defined as the capacity to perform work, measured in joules, and is transferred when work is done on an object.
Q3. Which is a vector quantity?
A vector quantity is defined by both magnitude and direction, and force is a vector, whereas mass, time, and temperature are scalar quantities.
Q4. The study of weather is called:
Meteorology is the scientific study of atmospheric phenomena, including weather patterns and forecasting.
Q5. 1 kilometer equals:
The prefix 'kilo-' denotes a factor of 1,000 in the International System of Units (SI), meaning 1 kilometer is equal to 1,000 meters.
Q6. Which prefix means 1/1000?
The prefix 'milli-' denotes one-thousandth (10⁻³), as in millimeter or milligram.
Q7. The number of base units in SI system is:
The International System of Units (SI) is based on seven fundamental base units: meter, kilogram, second, ampere, kelvin, mole, and candela.
Q8. Which is a SI base unit?
Meter is the SI base unit for length; Newton, Joule, and Pascal are derived units.
Q9. The study of earthquakes is called:
Seismology is the scientific discipline dedicated to studying earthquakes and seismic waves.
Q10. Which instrument is used to measure temperature?
A thermometer measures temperature by detecting changes in a physical property, such as thermal expansion of liquid or electrical resistance.
Q11. The scientific revolution began in:
The scientific revolution began in the 16th century with figures like Copernicus and Galileo challenging classical views and establishing modern scientific methods.
Q12. Which is NOT a branch of physics?
Botany is the scientific study of plants and belongs to biology, not physics.
Q13. The study of stars and planets is called:
Astronomy is the scientific study of celestial objects, including stars, planets, and the universe as a whole.
Q14. Which scientist discovered radioactivity?
Henri Becquerel discovered radioactivity in 1896 when he observed spontaneous emission of radiation from uranium salts, independent of external energy sources.
Q15. Precision refers to:
Precision describes the consistency or reproducibility of multiple measurements, whereas accuracy refers to closeness to the true value.
Q16. Accuracy refers to:
Accuracy measures the proximity of a measured value to the actual or accepted true value of the quantity being measured.
Q17. The systematic error in measurements is due to:
Systematic errors are consistent, repeatable errors typically associated with faulty equipment or flawed experimental design, whereas human mistakes and environmental fluctuations are often categorized differently.
Q18. Which is an example of quantitative data?
Quantitative data involves numerical measurements or counts, whereas the other options describe qualitative observations like smell, texture, and color.
Q19. Which is an example of qualitative data?
Qualitative data describes non-numerical characteristics, such as color, texture, or smell, making 'the flower is red' a clear example.
Q20. The process of drawing conclusions based on evidence is called:
An inference is a logical conclusion reached on the basis of evidence and reasoning.
Q21. Which is a source of scientific information?
Scientific journals publish peer-reviewed research, making them a reliable and authoritative source of scientific information.
Q22. A control in an experiment is used to:
A control provides a baseline for comparison to determine the effect of the independent variable in an experiment.
Q23. The variable that is changed in an experiment is called:
The independent variable is deliberately manipulated by the experimenter to observe its effect on the dependent variable.
Q24. Which is an example of scientific law?
No explanation is available in the database for this MCQ yet.
Q25. The process of recording observations and measurements is called:
Data collection refers specifically to the systematic recording of observations and measurements during scientific inquiry.
Q26. Scientific knowledge is:
Scientific knowledge is continuously revised through new evidence, experimentation, and peer review, making it inherently dynamic.
Q27. Which is NOT a step in the scientific method?
No explanation is available in the database for this MCQ yet.
Q28. The study of matter and energy and their interactions is called:
Physics is the fundamental science that studies matter, energy, and the interactions between them.
Q29. Which scientist discovered the law of gravity?
No explanation is available in the database for this MCQ yet.
Q30. The process of making decisions based on scientific information is called:
Evidence-based decision making specifically refers to using the best available scientific evidence to guide decisions, particularly in fields like healthcare and policy. It integrates research findings with clinical expertise and patient values.
Q31. Which is a non-renewable resource?
Coal is a fossil fuel formed over millions of years and cannot be replenished on a human timescale.
Q32. The main goal of science is to:
No explanation is available in the database for this MCQ yet.
Q33. Global warming is primarily caused by:
Carbon dioxide is the primary greenhouse gas responsible for trapping heat in the atmosphere and driving global warming.
Q34. The ozone layer protects us from:
The ozone layer in the stratosphere absorbs the majority of the sun's harmful ultraviolet (UV) radiation, preventing it from reaching the Earth's surface.
Q35. Which is a renewable resource?
Solar energy is continuously replenished by the Sun and is considered a renewable resource, unlike coal, petroleum, and natural gas which are finite fossil fuels, making option C correct.
Q36. Ethics in science refers to:
Scientific ethics encompasses moral principles ensuring integrity, honesty, and responsibility in research conduct.
Q37. The process of peer review in science ensures:
Peer review involves independent experts evaluating a study to ensure its methodology, data, and conclusions are scientifically sound before publication.
Q38. Which is an example of technology?
A mobile phone is a human-made device applying scientific principles, fitting the definition of technology as applied scientific knowledge.
Q39. Technology is:
No explanation is available in the database for this MCQ yet.
Q40. The scientific method involves:
The scientific method typically follows a logical progression starting with observation, followed by formulating a hypothesis, testing it through experimentation, and drawing conclusions.
Q41. Which scientist proposed the theory of relativity?
Albert Einstein developed both the special and general theories of relativity, revolutionizing our understanding of space, time, and gravity.
Q42. The process of gathering information through the senses is called:
Observation is defined as the act of gathering information by using one or more of the five senses.
Q43. A scientific theory is:
No explanation is available in the database for this MCQ yet.
Q44. Which is NOT a characteristic of scientific knowledge?
Scientific knowledge is objective and evidence-based, not derived from personal opinions or beliefs.
Q45. The systematic study of the structure and behavior of the physical world through observation and experiment is called:
Science is defined as the systematic pursuit of knowledge about the natural world through empirical observation and experimentation.
Q46. The branch of science that studies living organisms is:
Biology is the scientific study of life and living organisms, including their structure and function.
Q47. Scientific laws are:
Scientific laws describe observed regularities in nature and can be refined or replaced if new evidence contradicts them.
Q48. A testable explanation of a natural phenomenon is called:
A hypothesis is a testable, provisional explanation for a natural phenomenon awaiting empirical validation.
Q49. The first step in the scientific method is:
The scientific method typically begins with identifying a problem or making observations about a phenomenon, which leads to the formulation of a research question.
Q50. Science is primarily based on:
Science is fundamentally empirical, built on systematic observations and experiments that can be tested and verified, unlike beliefs, guesses, or traditions.
Chapter 9: Nature of Science Revision Guide
Complete the MCQs first, then review every incorrect answer against the textbook heading where that concept appears. For biology and other science subjects, pay attention to terminology, diagrams, sequence of processes, examples and differences between similar structures or functions.
This chapter page keeps the exact class, subject, chapter, question count, answer checking, explanations and follow-up chapters together, so students can revise from one focused URL instead of searching through the full book again.
Class 9 Physics MCQ Preparation: Nature of Science
This page supports Matric Part 1 practice in Physics. At this stage, the main purpose is building the definitions, symbols, rules and study habits needed for later matric work. The questions available here should be used with the current textbook and the instructions issued by the learner's school or examination board.
What Physics MCQs can test
In Physics, objective questions commonly draw on definitions, physical quantities, SI units, laws, graphs, diagrams, formulas and the interpretation of numerical situations. A useful answer is based on the exact wording and concept, not simply on recognising a familiar option. For this subject, learners should write the known quantities and units before choosing a formula, and distinguish a law from the example used to demonstrate it.
Nature of Science: focused MCQ revision
This chapter should be reviewed through its main definitions, examples, diagrams, comparisons and links with earlier Physics concepts.
Write a one-sentence reason for each corrected answer and note the textbook heading where the concept is explained.
Common mistakes for Class 9 learners
In this subject, frequent errors include mixing scalar and vector quantities, overlooking units, reversing cause and effect, or choosing a familiar formula without checking its conditions. Separate new terms that look similar and connect every formula, rule or definition with at least one textbook example. When the page marks an answer as incorrect, the next step should be to identify the mistaken idea and verify it, rather than memorising the displayed answer letter.
A practical revision routine
Read a small textbook section, answer a focused set of MCQs and correct the underlying idea before starting the next section. Before attempting the MCQs, review definitions, symbols, unit conversions, graph shapes, diagram labels and the meaning of each term in a formula. Complete a manageable set without notes, check the result, and divide errors into missing knowledge, misunderstood concepts and careless reading. Revise the appropriate section before repeating the chapter.
How to review Nature of Science after the quiz
List the questions you missed from Nature of Science and write the textbook heading connected with each one. Explain the correct idea in your own words, then return later and answer a fresh set. This gives the chapter page a clear purpose: finding specific weaknesses in Physics rather than only collecting a score.
Accuracy and responsible use
Explanations are provided where they exist in the question bank, but educational databases can contain incomplete or mistaken material. Confirm disputed answers with an authoritative textbook or teacher. Ahmad Learning Hub provides a practice resource and does not claim that a question will appear in an examination or that every available item represents an official board question.