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Measurement

Class 9 Science के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ScienceIf a controlled variable cannot be kept perfectly constant what is the best scientific step?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceIf the effect of sound intensity on concentration is investigated which would be the most suitable dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceAn experiment has a continuous independent variable. What does this mean?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceIn which experiment is the dependent variable operationally defined most clearly?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceWhen investigating the effect of temperature on metal length what measurement is more appropriate if initial lengths are unequal?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceA student changes the number of batteries and observes bulb brightness. Recording brightness only as dim medium and bright is what type of measurement?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceRepeated experimental results are very similar to one another but far from the true value. What can be said about the measurements?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceA student changes the measuring instrument after every trial. What problem may arise?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceIf a balance shows two grams more than the true value in every measurement what type of error is this?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceWhy is it important to decide how the outcome will be measured before conducting an experiment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceThree trials produced measurements of eleven centimetres eleven point one centimetres and fifteen centimetres. What is the appropriate next step?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceA student wrote that sweetened water is good for seeds. How can this be changed into a better hypothesis?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceIn an experiment on light duration and plant growth what would be the most suitable dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceWhich plan would most reduce observer bias?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceWhy is it useful to create an operational definition before an experiment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceAn experiment gives results of (12.1) cm (12.0) cm and (12.2) cm while the true value is (15.0) cm. How should these measurements be described?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceWhich option would most improve the precision of measurement?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceThe hypothesis is that a higher acid concentration makes a reaction faster. Which measurement is most suitable as the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceWhich type of variable is the measured result in an experiment?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceIn an experiment the dependent variable is recorded as good or poor. What is the best improvement?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert