Independent and Dependent Variables – Flashcards
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Independent Variables IV
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I am In control -The scientist is in control of this variable
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Dependent Variables DV
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-the measurement of the experiment -no control over DV Examples of DV: -time -count -volume -weight -length
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Control
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Things that stay the same throughout the experiment ex: plant type, soil type, container, oven
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The height of the bean plants depends on the amount of water (H2O) they receives. Find the independent variable.
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Water (H2O) is the independent variable. The amount of water the bean plants will receives is changing For example: 20 bean plants will get 2 cups of water 20 bean plants will get 1/2 cups of water
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The higher the temperature of the air in the oven, the faster a cake will bake. Find the dependent variable.
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Time How long it will take you to bake the cake will vary depending on what temperature the oven is set at
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An investigation found that more bushels of potatoes were produced when the soil was fertilized more. Find the independent and dependent variable.
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Independent Variable: Amount of Fertilizer Dependent Variable: bushels or count
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A study was done to find if different tire treads affect the braking distance of a car. Find the independent variable and control
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Independent variable: tire treads The scientist is testing different tire treads Control: car, driver
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Four groups of rats are first massed and then fed identical diets except for the amount of vitamin A they receive. Each group gets a different amount. After 3 weeks on the diet, the rats' masses are measured again to see if there has been a decrease. Find the control
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Control: -3 weeks -same rats -same time being fed
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Lemon trees receiving the most water produced the most lemons. Find the dependent and independent variables
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IV: Amount of water DV: number of lemons grown
