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Independent 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 experimentMedium ScienceA student calls room temperature the independent variable but does not change it or set it at different levels during the experiment. What is the best correction?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceWhich 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 experimentMedium ScienceIn an investigation salt concentration is the independent variable. Which option is the best set of its levels?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student says that the variable placed on the horizontal axis is always the independent variable. What is the most accurate evaluation?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceIn 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 experimentHard ScienceA student changes the distance from a magnet and measures attraction force. Changing distance from (2,\text{cm}) to (10,\text{cm}) is an example of what?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceA student investigates the effect of light duration on plant growth. The student changes light duration and measures plant height. Which is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceIn which option have the independent and controlled variables been incorrectly exchanged?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 ScienceDistance between a plant and lamp is changed to alter light intensity. How should the independent variable be recorded more accurately?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceIn which situation would time be the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceFour plants receive (50,mL), (100,mL), (150,mL) and (200,mL) of water respectively. How many levels of the independent variable are present?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceIn an experiment the rate of photosynthesis first increases and then becomes constant as light intensity rises. What should be placed on the horizontal axis of the graph?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceWhile measuring the distance travelled by a toy car on different surfaces what type of variable is the surface type?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceA student investigates the effect of light duration on plant growth. The number of light hours received each day is changed. What is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceA student heats food for different durations and measures its temperature. Which is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student measures water flow rate through holes of different sizes. Which is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student places surfaces of different colours in sunlight and measures temperature. What type of variable is surface colour?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceA student measures the time for ten oscillations of pendulums of different lengths. Which is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium