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Subjects

Science

Nature and meaning of science

“Nature and Meaning of Science” introduces Class 9 students to science as a systematic way of exploring the natural world, rather than a collection of fixed facts. Within “Exploration: Entering the World of Secondary Science,” students examine how observation, questioning, evidence, measurement, reasoning, experimentation, and communication work together to build scientific knowledge. The topic also highlights curiosity, objectivity, creativity, responsible investigation, and how explanations change when new evidence emerges. It connects science with everyday experiences and prepares learners for inquiry-based study of later concepts.

Hard · Level 1 · 25 questions

TOPIC PRACTICE

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Up to 25 questions from this page. Select your focus, then start.

25 questions

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  1. Reasoning is always wrong
  2. The explanation must also be supported by empirical evidence
  3. Reasoning is not used in scientific explanations
  4. Only the majority determines truth
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  1. The two variables change together
  2. There is a correlation between them
  3. One variable causes the other
  4. Further controlled testing is needed
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  1. There is no dependent variable
  2. An additional variable is affecting the result
  3. A hypothesis is unnecessary
  4. The experiment cannot be repeated
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  1. It is unreliable
  2. It is created without evidence
  3. It can be revised when stronger new evidence appears
  4. It changes every day
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  1. Accept both as true without testing
  2. Choose the popular explanation
  3. Design a test that examines their different predictions
  4. Change the data
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  1. All results are meaningless
  2. Measurement uncertainty should be considered
  3. The scientific method has failed
  4. Calculating an average is always wrong
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  1. They are exactly the same
  2. Repeatability involves the same person repeating the method while reproducibility involves others obtaining the result
  3. Reproducibility applies only to theories
  4. Repeatability involves no measurement
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  1. Random error
  2. Zero error
  3. Confirmation bias
  4. Sampling error
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  1. A theory becomes a law after enough evidence
  2. A law describes what happens while a theory explains why or how it happens
  3. A law has less evidence than a theory
  4. Both are merely guesses
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  1. A model is always imaginary
  2. A model simplifies some aspects of reality
  3. A model contains no evidence
  4. A model never makes predictions
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  1. The sample is highly precise
  2. The sample may not be representative
  3. The dependent variable is absent
  4. Laboratory safety is violated
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  1. Testing and revising ideas according to evidence
  2. Treating every idea as equally true
  3. Treating personal experience as supreme
  4. Accepting only numerical data
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  1. It is too simple
  2. It is not testable
  3. It must be correct
  4. It is a scientific law
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  1. Personal experience is never true
  2. It may lack controlled comparison and a broad sample
  3. It is always numerical
  4. It must always be repeated
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  1. To predetermine the result
  2. To test a clear cause-and-effect relationship
  3. To reduce the number of measurements
  4. To prove the hypothesis correct
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  1. Only the title
  2. Practical significance
  3. The researcher's fame
  4. Length of the hypothesis
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  1. Random error
  2. Systematic error
  3. Sample variation
  4. Human curiosity
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  1. Systematic error
  2. Random error
  3. Confirmation bias
  4. Theoretical error
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  1. Writing the results
  2. Comparing the effect
  3. Choosing instruments
  4. Forming a question
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  1. Validity concerns measuring the intended thing while reliability concerns obtaining consistent results
  2. Both concern only instrument cost
  3. Validity is repetition and reliability is hypothesis
  4. There is no difference
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  1. Selection bias
  2. Zero error
  3. Unit error
  4. Control error
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  1. Complete agreement among all scientists
  2. Broad agreement among experts based on available evidence
  3. Popular opinion
  4. A conclusion decided by government
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  1. Relevant similarities and differences between the groups
  2. Only the title of the study
  3. The author's age
  4. Only the duration of the experiment
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  1. It is extremely precise
  2. There is no possibility of showing it false
  3. It is reproducible
  4. It is quantitative
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  1. Observation influenced by expectations
  2. Error in measurement unit
  3. Sample size
  4. Natural variation

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