INTRODUCTION
SCIENTIFIC INQUIRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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0
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1
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between 1 and 5
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as many as needed
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Detailed explanation-1: -In an experiment you should only have one manipulated variable at a time. The manipulated variable is the independent variable in an experiment. An experiment generally has three variables: The manipulated or independent variable is the one that you control.
Detailed explanation-2: -More specifically, in an experiment, a variable can cause something to change, be the result of something that changed, or be controlled so it has no effect on anything. Variables that cause something to change are called independent variables or manipulated variables.
Detailed explanation-3: -As long as the experiment is repeated a sufficient number of times, it does not matter how many variables are used. Yes, an experiment should test only one variable at a time. This ensures that the experimental outcome is clearly due to one identifiable factor.