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Class 9 · Science · Medium
→On which axis is the independent variable usually plotted in a graph?
Class 9 · Science · Medium
→How may a large difference in the number of plants in two groups affect the comparison?
Class 9 · Science · Medium
→What is the main use of an initial observation in an experiment?
Class 9 · Science · Medium
→What problem may occur in an evaporation experiment if containers of different shapes are used?
Class 9 · Science · Medium
→What does reproducibility of an experiment mean?
Class 9 · Science · Medium
→A student records plant height for five days. What type of variable is time?
Class 9 · Science · Easy
→Which instrument would measure temperature while testing its effect on germination?
Class 9 · Science · Medium
→Which result supports rather than absolutely proves a hypothesis?
Class 9 · Science · Medium
→What is the benefit of increasing the sample size in an experiment?
Class 9 · Science · Medium
→What is the correct way to reduce parallax error?
Class 9 · Science · Medium
→A student says that a heavy ball will fall faster than a light ball. What should be measured to test this hypothesis?
Class 9 · Science · Medium
→Which action improves reliability but does not necessarily improve accuracy?
Class 9 · Science · Medium
→What is the benefit of recording experimental data in a table?
Class 9 · Science · Medium
→If a student compares the temperature of water kept in sunlight and shade what should be kept the same for control?
Class 9 · Science · Medium
→Which statement correctly distinguishes an observation from an inference?
Class 9 · Science · Medium
→What should be done if a zero error is found in an instrument?
Class 9 · Science · Medium
→In an experiment the amount of water was changed and seed germination was observed. Which graph would be most useful?
Class 9 · Science · Medium
→Which is the most appropriate way to improve accuracy in an experiment?
Class 9 · Science · Medium
→If a student is testing the rate at which salt dissolves what is the stopwatch used for?
Class 9 · Science · Medium
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