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Controlled Variable

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

ScienceWhich type of variable is not the result but keeps the conditions the same?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceIn an experiment on the effect of fertilizer how should the pot size be kept?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhile testing the effect of temperature on seed germination how should the type of seed be kept?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceA student tests whether container width affects evaporation. Which controlled variable is most essential?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceA student tests metal reaction at different acid concentrations. The acid volume differs in each trial. What effect may this have?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceIf an experimental result changes greatly on repetition what should be reviewed first?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA student tests enzyme activity at different temperatures but uses a different amount of enzyme in each sample. Which improvement is most necessary?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA student tests friction by using different toy cars on different surfaces. What should be changed to make the experiment valid?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceWhy may enzyme activity results be affected if temperature is not controlled in an experiment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceIf the hypothesis that sugar dissolves faster in warm water is tested what should be properly controlled?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA student wants to test whether stirring speed affects the time taken for sugar to dissolve. Which factor should be kept constant for a fair experiment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceIn an experiment all plants receive the same amount of water. What type of variable is the amount of water?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceIf the effect of water temperature on dissolving rate is tested which factor should be kept constant?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceA student investigates how stirring speed affects the time taken for salt to dissolve. Which factor should be kept constant for a fair test?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceA student tests how fan speed affects the drying time of cloth. Which should be a controlled variable?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceIf a student compares the temperature of water kept in sunlight and shade what should be kept the same for control?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceWhat is the main purpose of keeping controlled variables in a fair experiment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceTime was different in every trial although it was not the independent variable. What effect will this have?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceWhich factor should be kept the same when comparing germination of large and small seeds?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceA student investigates whether the amount of soap affects foam height. Which factor should be controlled?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium