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Class 9 · Science
→Why is calculating only the average insufficient when three measurements differ greatly?
Class 9 · Science
→A student wrote that not all seeds germinated because the seeds were defective. What type of statement is this?
Class 9 · Science
→What is the main advantage of increasing sample size in a scientific investigation?
Class 9 · Science
→Which observation is easiest to verify independently?
Class 9 · Science
→A student recorded plant heights in both centimetres and millimetres. What should be done for correct comparison?
Class 9 · Science
→If a question can be answered only with yes or no how can it be made more useful scientifically?
Class 9 · Science
→In an experiment students kept temperature constant but used different amounts of water. Why may comparison of dissolving time be unfair?
Class 9 · Science
→Which statement increases the objectivity of a scientific observation?
Class 9 · Science
→What is the main purpose of a control group in a scientific question?
Class 9 · Science
→A student wrote that a metal became longer on heating. What should be added to make the statement more scientific?
Class 9 · Science
→What is the purpose of keeping the eye at the level of the meniscus while reading liquid volume?
Class 9 · Science
→Which option makes a scientific question clearer and more focused?
Class 9 · Science
→A student experimented on three plants but planted each in a different type of soil. Why would the conclusion about fertiliser be doubtful?
Class 9 · Science
→Which observation is the most reproducible?
Class 9 · Science
→Why is it difficult to draw a conclusion if two variables are changed at the same time in an experiment?
Class 9 · Science
→A scientist wrote that a substance had a strong smell. What is the main limitation of this observation?
Class 9 · Science
→Which question requires defining a vague word before it can be tested scientifically?
Class 9 · Science
→If most values in a data set are similar but one value is very different what is the most scientific action?
Class 9 · Science
→A student asks how the amount of water affects the number of leaves on a plant. What is the dependent variable?
Class 9 · Science
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