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Experiment Examples 1 A scientist wants to determine the effect of the color of light on plant growth They buy 100 plants that are the same age and type of plant They then divide them into 4 groups and subject each group to 12 hours of the following light white red green and blue Independent variable light color non Control White nome Sample size 100 plants plantage Sal water Write a hypothesis Fyou use red light plant height temp then the part will grow the Fostest What could they do to improve this experiment increase sample site more light options repat in trouls 2 A person wants to find the best battery type They buy four of the same kind of flashlights and put four different types of batteries in each They then leave the flashlights on and record how long it takes for the batteries to die out Independent variable how long it takes battery Control Dependent variable plant grauth Constants time lahr light Sample size 4 different buttorys Dependent variable battery type Constants now long it takes for the buttary to die Write a hypothesis if we all tumon each battan at the Same time they will die at diffemt times the IU will have the Same battery time if the DU stays the same What could they do to improve this experiment more options repated trails differ

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