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Class 9 · Science · Easy
→What should be done before starting an experiment?
Class 9 · Science · Easy
→If the hypothesis is that sugar will dissolve faster in hot water what should be measured?
Class 9 · Science · Easy
→If a student changes the amount of water and measures plant height what is the dependent variable?
Class 9 · Science · Easy
→If a student changes the amount of water and measures plant height what is the independent variable?
Class 9 · Science · Easy
→What is the role of a controlled variable?
Class 9 · Science · Easy
→What is the main purpose of an experiment?
Class 9 · Science · Easy
→Which of these is a hypothesis?
Class 9 · Science · Easy
→What is the main feature of a good hypothesis?
Class 9 · Science · Expert
→A student investigating the effect of light on plant growth recorded only the final height and not the initial height. What will be the main difficulty?
Class 9 · Science · Expert
→Which option gives the most complete description of the relationship between scientific questions and observations?
Class 9 · Science · Expert
→A student recorded results but did not describe the investigation procedure in detail. Which quality will be affected most?
Class 9 · Science · Expert
→An observation table has column headings but no units. What difficulty will arise?
Class 9 · Science · Expert
→Which statement correctly distinguishes a scientific question from a hypothesis?
Class 9 · Science · Medium
→If the markings on a ruler used in an investigation are very thick what will be the main limitation?
Class 9 · Science · Expert
→In which question may natural observation be sufficient without deliberately changing the object?
Class 9 · Science · Expert
→Which observation plan would provide the most reliable comparison?
Class 9 · Science · Expert
→In which situation would calculating an average be most appropriate?
Class 9 · Science · Expert
→Which question would require long term observation most strongly?
Class 9 · Science · Expert
→A student writes the conclusion first and later selects only observations that support it. What combined problem does this illustrate?
Class 9 · Science · Expert
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