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Controlled Variables

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

ScienceWhich variables are not deliberately changed in an experiment?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhich variable may change when the independent variable is changed?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhat should be the size of cloth in a drying experiment?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhat may happen if container size changes in every trial?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceIn an experiment the container size is the same every time. What type of variable is container size?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhich option gives a controlled variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhich option gives a dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceHow should the size of ice pieces be kept in a melting investigation?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhat is the main purpose of a controlled variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceIf repeated trials produce widely different results what should be the first scientific step?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceWhich experimental plan would test a cause and effect relationship most reliably?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceA student investigates whether water temperature affects dissolving rate. Which procedure would be fairest?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceIf the hypothesis states that electrical resistance increases with wire length which factor should remain constant in a fair experiment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA hypothesis states that more exercise increases pulse rate. Which experimental plan is the fairest?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceIf results keep varying in an experiment what should be the first improvement?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceA student uses a different amount of sugar each time in an experiment on dissolving in hot water. What problem will arise?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceIn the same experiment what will be the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceA hypothesis states that cloth will dry faster in sunlight than in shade. What should remain the same for a fair test?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceIn an experiment a student tests how light duration affects plant growth. What is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceA student hypothesises that a wet cloth will dry faster when exposed to more airflow. Which factor should be kept the same for a fair test?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium