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Class 9 · Science
→If sound level is measured on different days but the instrument position changes each time why is the comparison weakened?
Class 9 · Science
→A scientific question asks whether more light makes plants grow faster. What is the best measure of faster growth?
Class 9 · Science
→Some participants stopped responding during an observational study. What should be examined before drawing a conclusion?
Class 9 · Science
→In which situation can a qualitative observation still be scientifically useful?
Class 9 · Science
→A student inferred that a tree is older because its trunk is thicker. What should be the next scientific step?
Class 9 · Science
→A question asks whether fertiliser is beneficial. Which outcome would measure this best?
Class 9 · Science
→Two students read different volumes from the same beaker because their eyes were at different heights. What error does this illustrate?
Class 9 · Science
→A student wrote that sugar dissolved slowly in cold water. Which additional measurement would be most useful?
Class 9 · Science
→Which observation plan is best for studying butterfly diversity in an area?
Class 9 · Science
→Plant height was recorded daily but a different ruler was used each day. What is the main problem?
Class 9 · Science
→If an event has been observed only once which conclusion is most cautious?
Class 9 · Science
→A scientific observation states that an animal was restless. How can this term be made measurable?
Class 9 · Science
→A scientific question asks how heat affects seeds. Which revision is clearest?
Class 9 · Science
→A student described soil moisture as dry or wet by touch. What should be done for a more objective observation?
Class 9 · Science
→A question can be answered with yes or no but the measurement method is unclear. How can it be improved?
Class 9 · Science
→Three measurements of the same temperature gave different values. What should be checked first?
Class 9 · Science
→A student classified rainfall intensity as light moderate and heavy. What is needed to make these categories reliable?
Class 9 · Science
→An observer expects red birds to be more common before counting them. Which practice would reduce bias?
Class 9 · Science
→Which question defines both the independent and dependent variables operationally?
Class 9 · Science
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