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Dependent Variable

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

ScienceIn an ideal fair experiment, which relationship among independent, dependent and controlled variables is correct?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMediumScienceA student tests the cleaning ability of three soaps, but the initial stain size differs on each cloth. Which would be the fairest dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceIf the independent-variable values are correct but the dependent variable is measured by a different method each time, which quality is most affected?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMediumScienceWhich option lists the independent, dependent, and controlled variables in the correct order when testing the effect of fertilizer amount on plant dry mass?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMediumScienceTwo students use the same independent variable but one records time in seconds and the other in minutes. What is necessary before comparison?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceIn an experiment the result is recorded as good average or poor. What is the main limitation of this dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceTo investigate the effect of surface area on evaporation rate which dependent variable is most clearly defined?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceIn an experiment the number of batteries is changed and bulb brightness is rated on a scale from one to five. Which statement is correct?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceA student claims that plant species is the dependent variable because the plant is observed at the end. Why is this claim incorrect?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceIn an experiment on light intensity and photosynthesis bubbles released per minute by an aquatic plant are counted. What does the bubble count represent?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceIn an experiment on the effect of temperature on seed germination the percentage of germinated seeds is recorded. Which is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceIn which experiment is the dependent variable operationally defined most clearly?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceWhen 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 experimentHardScienceWhy may percentage of germinated seeds be a better dependent variable than the number germinated in an experiment on salinity?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceA student defines the independent variable as the value obtained at the end of an experiment. What is wrong with this statement?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceWhile testing the effect of surface type on friction the force needed to pull an object is measured. What does this force represent?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceIn an experiment the amount of water was changed and the number of leaves was measured. Which is the quantitative dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceA student tests how fan speed affects the drying time of a wet cloth. What is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceWhile testing the effect of fertilizer amount on plant height what type of variable is plant height?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceA student compresses a spring by different distances and measures the distance travelled by a car. Which is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium

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