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    Variables in Science Experiments

    How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

    1

    A variable that is changed on purpose, by the scientist; the scientist controls it; the plan he/she sets up or changes to make the experiment work:

    2

    The variable that does not change during an experiment; stays the same throughout the experiment is:

    3

    A factor or condition that is the result of a change made intentionally in an experiment; what is observed and measured; it relies on the independent variable:

    4

    What the scientist changes or manipulates; sometimes is called a manipulated variable:

    5

    This variable helps keep the experiment fair by remaining unchanged:

    6

    Which variable changes or reacts during the experiment?

    7

    If you have more than one independent variable in an experiment, then the results will not be valid.

    8

    If you have more than one controlled variable in an experiment, then the results will not be valid.

    9

    Three different brands of tennis balls are tested to see which will bounce the highest. All of the balls are dropped by the same person form a height of exactly six meters.

    What is the dependent variable?

    10

    Three different brands of tennis balls are tested to see which will bounce the highest. All of the balls are dropped by the same person form a height of exactly six meters.

    What is the independent variable?