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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.

Expert · Level 4 · 25 questions

TOPIC PRACTICE

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25 questions

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  1. Bias from selecting a favourable outcome
  2. Increased precision
  3. Randomisation of the sample
  4. Strengthening of the control group
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  1. Declare one cause as certain
  2. Give a cautious conclusion acknowledging alternative explanations
  3. Reject all data
  4. Turn the hypothesis into a law
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  1. Causal testing is stronger but generalisation is limited
  2. Generalisation is stronger but causal testing is limited
  3. Both are completely strong
  4. Neither has any value
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  1. Independent checking and reproduction are difficult
  2. A famous study is always wrong
  3. The claim is automatically true
  4. Method has no importance in science
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  1. Internal validity may be strong while external validity is limited
  2. External validity is strong while control is weak
  3. Both validities must be zero
  4. Measurement precision disappears
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  1. Distorted evidence from selected examples
  2. High reproducibility
  3. Accurate calibration
  4. Random assignment
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  1. The claim is proven
  2. Absence of opposing evidence is weak support
  3. The claim must be false
  4. Evidence is unnecessary
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  1. Overclaiming
  2. Reproduction
  3. Standardisation
  4. Calibration
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  1. The definition of improvement may be changed to fit the result
  2. Measurement will automatically become accurate
  3. Sample size will increase
  4. The control group will become unnecessary
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  1. Retesting by independent groups
  2. Immediately accept the supporters' results
  3. Prevent critics from experimenting
  4. Remove the original data
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  1. The model may be unstable and overly fitted
  2. The model must be final truth
  3. Complexity always indicates scientific strength
  4. Changing predictions are good evidence
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  1. Measurement limits and incomplete values should have been reported
  2. Out-of-range values should be silently removed
  3. The average should be treated as final truth
  4. The instrument name should be hidden
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  1. Variation across conditions or groups may be poorly estimated
  2. Individual measurement will be impossible
  3. The sample will automatically be biased
  4. All results will be invalid
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  1. If supporting evidence is strong and limitations are clear
  2. Because disagreement has no importance
  3. If a government accepts it
  4. If it is the most popular
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  1. A controlled experiment and examination of alternative causes where possible
  2. A more attractive graph
  3. A famous author
  4. A larger title
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  1. A large effect removes methodological weakness
  2. The result is interesting but requires confirmation with stronger methods
  3. The claim should immediately become a law
  4. Raw data are unnecessary
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  1. A large percentage from a small baseline may represent a small actual change
  2. Percentage always shows the full change
  3. The baseline has no importance
  4. Percentage proves causation
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  1. Treat the opinion as equal to expertise in the relevant field
  2. Examine direct evidence and experts from the relevant field
  3. Reject the claim immediately
  4. Accept it based only on fame
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  1. Comparison and objective testing of the claim may be difficult
  2. A narrative is always false
  3. Qualitative evidence is never useful in science
  4. Measurement is needed only in physics
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  1. The number of studies removes every weakness
  2. Strong independent confirmation is still needed because of the shared weakness
  3. The claim is final truth
  4. Small studies are always useless
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  1. Creating new hypotheses and models while testing them with evidence
  2. Treating imagination as true without testing
  3. Changing data to match imagination
  4. Removing the need for experiments
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  1. Abandon the question forever
  2. Use observational studies models and safe alternative evidence
  3. Accept a conclusion without evidence
  4. Conduct the unethical experiment
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  1. Logical validity is weak
  2. The data are automatically wrong
  3. Measurement precision is high
  4. The sample must be small
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  1. When outcomes contain natural variation and uncertainty
  2. When no data are available
  3. When a scientist wants to hide a certain answer
  4. When the claim is untestable
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  1. It is only a collection of established facts
  2. It is a collective knowledge process developed through evidence reasoning imagination testing criticism ethics and revision
  3. It is only a laboratory activity
  4. It is the unchangeable opinion of experts

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