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Class 9 · Science · Medium
→If different groups record length in different units what should be done before comparison?
Class 9 · Science · Medium
→What problem may occur if a thermometer reading is recorded before it becomes stable?
Class 9 · Science · Medium
→A measuring cylinder was kept tilted during an experiment. What type of problem will this cause?
Class 9 · Science · Medium
→What would be a suitable measure of the dependent variable in an evaporation experiment?
Class 9 · Science · Medium
→If the hypothesis states that surface area affects evaporation what should be changed?
Class 9 · Science · Medium
→Which conclusion stays within the limits of experimental data?
Class 9 · Science · Medium
→What should be done if one value is very different from all other results?
Class 9 · Science · Medium
→A student tested fertiliser on only one plant. What should be done to make the conclusion more reliable?
Class 9 · Science · Medium
→What is the main benefit of writing the experimental method clearly?
Class 9 · Science · Medium
→Which factor should be kept the same when comparing germination of large and small seeds?
Class 9 · Science · Medium
→A student hypothesises that larger seeds will germinate faster. What is the independent variable?
Class 9 · Science · Medium
→What would be an appropriate control in an experiment on exercise and pulse rate?
Class 9 · Science · Medium
→If a student tests the hypothesis that exercise increases pulse rate what should be measured?
Class 9 · Science · Medium
→In which experiment is a control group most necessary?
Class 9 · Science · Medium
→Initial and final plant heights were recorded in an experiment. How will growth be determined?
Class 9 · Science · Medium
→In which situation is calculating an average most appropriate?
Class 9 · Science · Medium
→Which quality improves when an experiment is repeated several times?
Class 9 · Science · Medium
→Why is it necessary to identify risks before starting an experiment?
Class 9 · Science · Medium
→Which statement is not a testable hypothesis?
Class 9 · Science · Medium
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