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Class 9ScienceExploration: Entering the World of Secondary ScienceVariables in an experimentEasy
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In the same experiment how should the amount of water be kept?

Answer and explanation

Correct answer: The same measured amount in every pot

The water amount should be the same and measured for every pot. This keeps water as a controlled variable, so any difference in plant growth can be linked to the type of soil. If different amounts of water are used, the effects of soil and water become mixed. Exam tip: In a fair test, change only the variable being investigated and keep the others constant.

Related tags

Controlled VariablesFair TestExperimental VariablesSoil ExperimentPlant GrowthVariables In An ExperimentExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary Science
सुधार सुझाएँ / Earn

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10 more MCQs
  1. 1What is a dependent variable in a scientific investigation?
  2. 2Which factor should be kept the same while testing the effect of light on plant growth?
  3. 3What problem may arise if plant height is measured at different times each day?
  4. 4In which question is the amount of water the independent variable?
  5. 5Which question tests the relationship between light and germination?
  6. 6What should be the same while comparing two groups?
  7. 7Why are factors other than water kept the same while studying plant growth?
  8. 8Which question is related to the number of leaves?
  9. 9In an investigation different soil types and different amounts of water were used for every plant. What is the main problem?
  10. 10Which type of variable is the measured result in an experiment?
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