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Variables In An Experiment

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

ScienceWhy should the duration be kept the same in an experiment on leaf area and water loss?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student measures water loss from leaves with different surface areas. Which is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student investigates how fan speed affects cloth drying time. What happens if the amount of water in the cloth differs?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceWhy is it necessary to release the car from the same point each time in a ramp experiment?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceIn the ramp experiment what type of variable is the time taken by the car to reach the bottom?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student sets a ramp at different angles and measures the time taken by a car to reach the bottom. What type of variable is ramp angle?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceIn an experiment on exercise and pulse rate what additional variable may affect the result if different students are used?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student measures pulse rate after exercising for different durations. Which is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceWhy is it necessary to keep the bulb type the same in an experiment on voltage and brightness?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student measures bulb brightness at different voltages. What is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceWhy should the initial size of potato pieces be kept the same in the salt-solution experiment?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student measures the mass change of potato pieces in salt solutions of different concentrations. What is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceWhy should the number of seeds be the same in each group of a germination experiment?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student measures germination percentage at different temperatures. What are temperature and germination percentage respectively?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceWhat difficulty arises if plants have different initial heights in a fertilizer experiment?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student gives different amounts of fertilizer and counts the number of leaves. What type of variable is the number of leaves?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceWhat is the main reason for keeping the initial push the same in a toy-car experiment?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student investigates how surface type affects the distance travelled by a toy car. Which is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceWhich is the most suitable controlled variable in an experiment on lamp distance and light intensity?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student places a lamp at different distances and measures light intensity. What are lamp distance and light intensity respectively?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium