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Class 9 · Science
→What will be the independent variable while testing the effect of water amount on seed germination?
Class 9 · Science
→In which situation will the validity of an experiment decrease most?
Class 9 · Science
→Which group is a correct example of controlled variables while testing the effect of temperature on sugar dissolving?
Class 9 · Science
→In the sugar dissolving experiment what type of variable is water temperature?
Class 9 · Science
→In an experiment sugar dissolving time is measured at different temperatures. What is the dependent variable?
Class 9 · Science
→If water amount also changes while testing the effect of fertiliser on plant growth what will water amount become?
Class 9 · Science
→Which factor should be kept the same in a fair investigation of the effect of light?
Class 9 · Science
→A student investigates how light duration affects plant height. What is the independent variable?
Class 9 · Science
→In an experiment the mean results of two groups are nearly equal but one group has a much larger spread. Which conclusion is most appropriate?
Class 9 · Science
→A student hypothesizes that smaller particles of the same mass will react faster than larger particles. Which experimental setup would test this hypothesis most fairly?
Class 9 · Science
→What relationship should exist between the hypothesis and conclusion in a good experimental report?
Class 9 · Science
→Which statement correctly expresses uncertainty in an experimental result?
Class 9 · Science
→A hypothesis predicts that more salt will reduce seed germination. If germination rises at moderate salt but falls at high salt what conclusion is appropriate?
Class 9 · Science
→Which plan would most reduce observer bias?
Class 9 · Science
→An experimental conclusion states that the treatment increased the result by (10%). Which information is necessary to interpret this claim?
Class 9 · Science
→Which evidence would most strongly support the hypothesis that increasing sound intensity increases vibration amplitude?
Class 9 · Science
→A student changed the experimental method after viewing the results and reported only the method giving better results. What problem does this create?
Class 9 · Science
→In a hypothesis test the effect appears only when measurements are near the limit of the instrument. What is the most appropriate caution?
Class 9 · Science
→In which situation would a crossover experiment be useful?
Class 9 · Science
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