# Experimental Design: Independent and Dependent Variables

## Quiz by Jennifer Livers

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11 questions

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- Q1Students of different ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle. What is the independent variable?Ages of the studentsType of jigsaw puzzleTime to finish the puzzle30s
- Q2Students of different ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle. What is the dependent variable?Ages of studentsType of jigsaw puzzleTime it took to put the puzzle together30s
- Q3Students of different ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle. What is the controlled variable?Participants were given same type of puzzle.Age of studentsTime to finish the puzzle30s
- Q4An investigation was done with an electromagnetic system made from a battery and wire wrapped around a nail. Different sizes of nails were used. The number of paper clips the electromagnet could pick up was measured. What is the independent variable?Battery and wireSizes of nails# of paper clips30s
- Q5An investigation was done with an electromagnetic system made from a battery and wire wrapped around a nail. Different sizes of nails were used. The number of paper clips the electromagnet could pick up was measured. What is the dependent variable?Different sizes of nailsNumber of paper clips picked upElectromagnetic system30s
- Q6The more time people spend using social media, the less they read books. What is the independent variable?Amount of books readPeopleTime on social media30s
- Q7A comprehension test was given to students after they had studied textbook material either in silence or with the television turned on. What is the dependent variable?Amount of time studyingSilenceAchievement (grade) on the test45s
- Q8You want to compare brands of paper towels, to see which holds the most liquid. What is the independent variable?Brand of paper towelHow much liquid the paper towel absorbsPerson comparing paper towels45s
- Q9You want to compare brands of paper towels, to see which holds the most liquid. What is the dependent variable?The person administering the experiment.Brand of paper towelAmount of liquid absorbed by the paper towel45s
- Q10You want to determine whether a chemical is essential for rat nutrition, so you design an experiment. What is the independent variable?Health of the ratThe presence or absence of the chemicalType of food the rat eats45s
- Q11You want to determine whether a chemical is essential for rat nutrition, so you design an experiment. What is the dependent variable?The absence or presence of the chemical.The food the rat eats.The health of the rat.45s