9th Physics Chapter 9 Constructed response question
9th Physics Chapter 9 Constructed response question. We will solve only smart syllabus 9th class physics.
9.1 Is the theory of science an ultimate truth? Describe briefly.
No, scientific theory is not an ultimate truth. Scientific theory is a well tested explanation of observed natural phenomena but it can be replaced or modified if new evidences are discovered.
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9.2 Do you think that the existing laws of nature may need a change in future?
Yes, existing laws of nature may need change in the future because better explanations and new discoveries can lead to modification of scientific laws.
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9.3 Describe three jobs that need the use of scientific knowledge.
Doctors, scientists, pharmacists, meteorologist and mathematicians, and engineers are the jobs that need the use of scientific knowledge.
Doctors use scientific use of biology and medicine. Pharmacists use scientific use of chemistry to prepare medicine. Engineers use scientific use of physics.
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9.4 Describe when a theory is rejected or needs its modification.
Scientific theory is rejected or modified when new experimental results contradicts its predictions. A Scientific theory is also rejected or modified when a better theory is developed that explains the same facts more accurately.
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9.5 Comment on the statement. ” A theory capable of being proved right but not being proved wrong is not a scientific theory”.
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9.6 What has been the general reaction to new ideas about established truths?
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9.7 If a hypothesis is not testable, is the hypothesis wrong? Explain.
No, a hypothesis that is not testable is not necessarily wrong. But that hypothesis will not be scientific. A hypothesis must be testable, otherwise it cannot be confirmed or rejected using scientific methods.
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9.8 Explain how a small amount of data cannot prove that a prediction is always correct but can prove it is not always correct.
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9.9 What is the relationship between an experiment and a hypothesis?
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9.10 Describe why the solution of complex problems need interdisciplinary research and collaboration.
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